Analytical Reagents

This certified eluent concentrate for ion chromatography is traceable by potentiometric titration to NIST Standard Reference Material. It is certified in accordance with ISO Guide 31. All details about exact content, uncertainty, traceability and expiry date are described in the certificate.
Sulfuric acid (hydrogen sulfate, sulphine acid,battery acid) is a clear, colorless, oily liquid and is very corrosive in nature towards both metal and tissues. It is soluble in water.

storage conditions	Store at +15°C to +25°C.
Quality Level	100
grade	ACS reagent
Agency/Method	reag. Ph. Eur.
assay	99.0-102.0% (acidimetric)
form	solid
autoignition temp.	>400 °C
potency	12300 mg/kg LD₅₀, oral (Rat)
pH	2.5 (20 °C, 10 g/L in H₂O)
mp	288 °C (decomposes)
solubility	water: 10 g/L at 20 °C
density	1.485 g/cm³ at 25 °C
bulk density	620 kg/m³
anion traces	chloride (Cl^-): 0.002%, nitrite (NO₂^-): 0.5 ppm, sulfate (SO₄^2-): 0.01%
cation traces	heavy metals (as Pb): 0.001%
storage temp.	15-25°C
InChI	1S/C6H7NO3S/c7-5-1-3-6(4-2-5)11(8,9)10/h1-4H,7H2,(H,8,9,10)
InChI key	HVBSAKJJOYLTQU-UHFFFAOYSA-N

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Sulfuric acid concentrate

Empirical Formula (Hill Notation):	H₂O₄S
Linear Formula:	H₂SO₄
CAS Number:	7664-93-9
Molecular Weight:	98.08
Beilstein/REAXYS Number:	2037554
MDL number:	MFCD00064589
PubChem Substance ID:	329760509
NACRES:	NB.21

Metrohm IC application noteAN-S-344:Anions in "Electronic grade" nitric acid on a high-capacity column.
Metrohm IC application noteAN-S-341:4-Hydroxybutyrate in addition to standard anions and organic acids.
Metrohm IC application noteAN-S-336:Anion traces on the Metrosep A Supp 16 - 250/2.0 after Inline Preconcentration and Matrix Elimination

Biochem/physiol Actions

It finds application in the manufacture of explosives, fertilizers, glue and other acids. It is also used in the pickling of metal, purification of petroleum, and in lead-acid batteries. It is widely used as dehydrating agent, catalyst, and as an active reactant in chemical industry. It is also suitable to control pH, ranging from saline solutions to strong fuming acids.
Sulfuric acid is prepared by dry distillation of minerals like copper sulfate pentahydrate (blue vitriol), and iron sulfate heptahydrate (green vitriol). On application of heat these compounds decompose to form iron and copper oxides thereby eliminating water and sulphur trioxide, which then combine to give, dilute solution of sulphuric acid.

Linkage

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Preparation Note

Prepared with sulfuric acid and high purity water (18.2 MΩ, 0.2 μm filtered)

Quality Level	100
concentration	0.1 M H₂SO₄ in water (0.2N)
application(s)	immunocytochemistry: suitable
SMILES string	OS(O)(=O)=O
InChI	1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
InChI key	QAOWNCQODCNURD-UHFFFAOYSA-N

The “super-DHB” matrix consists of a 9:1 (w/w) mixture of 2,5-DHB and 2-hydroxy-5-methoxybenzoic acid, respectively, since this ratio was found to be the most effective. The beneficial effect of the 2-hydroxy- 5-methoxybenzoic acid additive is attributed to a disorder in the 2,5-DHB crystal lattice resulting in enhanced ion desorption (i.e. ‘softer desorption) and reduced internal energy, which in turn results in reduced metastable fragmentation. An increase in sensitivity of up to 2 to 3-fold has been reported for a standard dextran mixture with concomitant enhanced resolution attributed to reduced metastable ion formation. The super-DHB matrix has also been reported to generate enhanced signals from tryptic glycopeptides. The use of super-DHB matrix is reported to reduce the presence of matrix background ions and result in glycan signals exhibiting better signal to noise ratios and higher resolution in the mass spectrum.

pictograms	GHS05
signalword	Warning
hcodes	H290
Personal Protective Equipment	Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
RIDADR	UN 3264 8 / PGIII
WGK Germany	nwg
Flash Point F	Not applicable
Flash Point C	Not applicable

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Super-DHB

CAS Number:	63542-76-7
NACRES:	NA.21

Bottomless glass bottle. Contents are inside inserted fused cone.

Analysis Note

9:1 mixture of DHB and 2-hydroxy-5-methoxybenzoic acid

Quality Level	100
assay	≥99.0% (sum of DHB and 2-hydroxy-5-methoxybenzoic acid, HPLC), ≥99.0%
analyte functional class(es)	polymers
analyte chemical class(es)	glycans, peptides, proteins
application(s)	MALDI-MS: suitable
solubility	methanol: 1%, clear
cation traces	Ca: ≤5 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤5 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
suitability	suitable for matrix substance for MALDI-MS

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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tert-Butyldimethylsilyl trifluoromethanesulfonate

Empirical Formula (Hill Notation):	C₇H₁₅F₃O₃SSi
Linear Formula:	CF₃SO₃Si(CH₃)₂C(CH₃)₃
CAS Number:	69739-34-0
Molecular Weight:	264.34
Beilstein/REAXYS Number:	2370068
EC Number:	274-102-0
MDL number:	MFCD00000405
PubChem Substance ID:	329758222
NACRES:	NA.22

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for GC derivatization
assay	98.0% (T)
quality	LiChropur^™
reaction suitability	reagent type: derivatization reagent reaction type: Silylations
application(s)	gas chromatography (GC): suitable
refractive index	n20/D 1.385 (lit.), n20/D 1.385
bp	65-67 °C/12 mmHg (lit.)
density	1.151 g/mL at 25 °C (lit.)
storage temp.	2-8°C
SMILES string	CC(C)(C)[Si](C)(C)OS(=O)(=O)C(F)(F)F
InChI	1S/C7H15F3O3SSi/c1-6(2,3)15(4,5)13-14(11,12)7(8,9)10/h1-5H3
InChI key	WLLIXJBWWFGEHT-UHFFFAOYSA-N

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pictograms	GHS02,GHS05,GHS07
signalword	Danger
hcodes	H226 - H314 - H335
pcodes	P261 - P280 - P305 + P351 + P338 - P310
Target Organs	Respiratory system
RIDADR	UN 2920 3(8) / PGII
WGK Germany	WGK 3
Flash Point F	98.6 °F - closed cup
Flash Point C	37 °C - closed cup

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Tetrabutylammonium acetate

Empirical Formula (Hill Notation):	C₁₈H₃₉NO₂
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(OCOCH₃)
CAS Number:	10534-59-5
Molecular Weight:	301.51
Beilstein/REAXYS Number:	3599376
EC Number:	234-101-8
MDL number:	MFCD00043208
PubChem Substance ID:	329769490
NACRES:	NB.61

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (NT), ≥99.0%
mp	95-98 °C (lit.)
solubility	acetonitrile: 0.1 g/mL, clear, colorless to very faintly brown
SMILES string	CC([O-])=O.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.C2H4O2/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-2(3)4/h5-16H2,1-4H3;1H3,(H,3,4)/q+1;/p-1
InChI key	MCZDHTKJGDCTAE-UHFFFAOYSA-M

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pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium benzoate

Empirical Formula (Hill Notation):	C₂₃H₄₁NO₂
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(OCOC₆H₅)
CAS Number:	18819-89-1
Molecular Weight:	363.58
Beilstein/REAXYS Number:	4070140
MDL number:	MFCD00171701
PubChem Substance ID:	329769491
NACRES:	NB.61

Tetrabutylammonium benzoate may be used as an analytical reagent for the electrochemical generation of hydrogen from acetic acid using a molecular molybdenum-oxo catalyst.

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (NT), ≥99.0%
mp	64-67 °C (lit.)
solubility	acetonitrile: 0.1 g/mL, clear, colorless
SMILES string	[O-]C(=O)c1ccccc1.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.C7H6O2/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;8-7(9)6-4-2-1-3-5-6/h5-16H2,1-4H3;1-5H,(H,8,9)/q+1;/p-1
InChI key	WGYONVRJGWHMKV-UHFFFAOYSA-M

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pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium bis-trifluoromethanesulfonimidate

Empirical Formula (Hill Notation):	C₁₈H₃₆F₆N₂O₄S₂
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N[N(SO₂CF₃)₂
CAS Number:	210230-40-3
Molecular Weight:	522.61
Beilstein/REAXYS Number:	8247973
MDL number:	MFCD01863113
PubChem Substance ID:	329769492
NACRES:	NB.61

Novel type of electrolyte, used e.g. in electrical double layer capacitors

Quality Level	100
grade	for electronic purposes
assay	≥99.0% (qNMR), ≥99.0%
mp	90-95 °C
SMILES string	FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.C2F6NO4S2/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;3-1(4,5)14(10,11)9-15(12,13)2(6,7)8/h5-16H2,1-4H3;/q+1;-1
InChI key	CFAPFDTWIGBCQK-UHFFFAOYSA-N

Tetrabutyammonium bisulfate (TBAHS) is an ion-pairing reagent. It acts as a catalyst in hydrolysis of aziridines and epoxides and the catalyst can be recycled.

pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P280 - P305 + P351 + P338 - P310
Personal Protective Equipment	Eyeshields, Faceshields, Gloves, type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
RIDADR	UN 3261 8 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium bisulfate

Empirical Formula (Hill Notation):	C₁₆H₃₇NO₄S
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(HSO₄)
CAS Number:	32503-27-8
Molecular Weight:	339.53
Beilstein/REAXYS Number:	3599663
EC Number:	251-068-5
MDL number:	MFCD00011637
PubChem Substance ID:	329769496
NACRES:	NB.21

TBAHS was suitable as ion-pairing reagent in determination and separation of thallium using ionic liquid-assisted ion-pairing liquid-liquid microextraction and inductively coupled plasma mass spectrometry. It was suitable as mobile phase component for a HPLC-UV analysis to quantify chondroitin sulfate.

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (T), 99.0%
quality	LiChropur^™
application(s)	HPLC: suitable, ion pair chromatography: suitable
mp	171-174 °C
anion traces	bromide (Br^-): 50 mg/kg
	10 % in H₂O
UV absorption	: 210 nm A_max: 0.06, : 220 nm A_max: 0.05, : 230 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
SMILES string	OS([O-])(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.H2O4S/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
InChI key	SHFJWMWCIHQNCP-UHFFFAOYSA-M

Concentrate for 6x1 L ready-to-use solution. Dilute contents of one ampule (~0.3 M) to 1 L with HPLC grade water to obtain a 0.005 M eluent solution.

pictograms	GHS05,GHS07
signalword	Danger
hcodes	H302 - H314 - H412
pcodes	P260 - P273 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P305 + P351 + P338 + P310
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 2
Flash Point F	348.1 °F - closed cup
Flash Point C	175.6 °C - closed cup

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Tetrabutylammonium bisulfate solution

Empirical Formula (Hill Notation):	C₁₆H₃₇NO₄S
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(HSO₄)
CAS Number:	32503-27-8
Molecular Weight:	339.53
Beilstein/REAXYS Number:	3599663
EC Number:	251-068-5
MDL number:	MFCD00011637
PubChem Substance ID:	329770555
NACRES:	NB.21

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
quality	LiChropur^™, ampule
packaging	ampule of 25 mL
application(s)	ion pair chromatography: suitable
SMILES string	OS([O-])(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.H2O4S/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
InChI key	SHFJWMWCIHQNCP-UHFFFAOYSA-M

Tetrabutylammonium bromide, a quaternary ammonium compound widely used as a phase transfer catalyst. TBAB decreases the retention time and removes peak tailing by acting as an ion pair reagent during the chromatographic analysis of quaternary ammonium compounds. In the molten state, TBAB behaves like an ionic liquid, which is a promising green alternative to organic solvents in polymer synthesis.

pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P280 - P303 + P361 + P353 - P305 + P351 + P338 + P310
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 2
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium bromide

Empirical Formula (Hill Notation):	C₁₆H₃₆BrN
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(Br)
CAS Number:	1643-19-2
Molecular Weight:	322.37
Beilstein/REAXYS Number:	3570983
EC Number:	216-699-2
MDL number:	MFCD00011633
PubChem Substance ID:	329769498
NACRES:	NB.21

TBAB may have been used as ion-pairing reagent in phase-transfer catalytic extraction and derivatization procedure during micropollutant determination from water samples using GC technique.

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT), 99.0%
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	102-106 °C (lit.), 102-106 °C
	10 % in H₂O
UV absorption	: 240 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.BrH/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H/q+1;/p-1
InChI key	JRMUNVKIHCOMHV-UHFFFAOYSA-M

Tetrabutylammonium chloride (TBACl) is a quaternary ammonium salt.g

pictograms	GHS07
signalword	Warning
hcodes	H302 - H315 - H319 - H412
pcodes	P264 - P270 - P273 - P301 + P312 - P302 + P352 - P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3

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Tetrabutylammonium chloride

Empirical Formula (Hill Notation):	C₁₆H₃₆ClN
Linear Formula:	[CH₃(CH₂)₃]₄NCl
CAS Number:	1112-67-0
Molecular Weight:	277.92
Beilstein/REAXYS Number:	3571227
EC Number:	214-195-7
MDL number:	MFCD00011635
PubChem Substance ID:	329769495
NACRES:	NB.21

TBACl has been used as ion-pairing reagent in the mobile phase during the quantification of nitrate and nitrite in water and food samples by normal phase ion-pair high performance liquid chromatography.

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT), 99.0%
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
	10 % in H₂O
UV absorption	: 220 nm A_max: 0.05, : 230 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Cl-].CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.ClH/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H/q+1;/p-1
InChI key	NHGXDBSUJJNIRV-UHFFFAOYSA-M

Tetrabutylammonium hydroxide (TBAOH) is a quaternary ammonium salt,mainly used as a strong base and phase-transfer catalyst.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319
pcodes	P302 + P352 - P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	235.4 °F - closed cup
Flash Point C	113 °C - closed cup

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Tetrabutylammonium hydroxide solution

Empirical Formula (Hill Notation):	C₁₆H₃₇NO
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(OH)
CAS Number:	2052-49-5
Molecular Weight:	259.47
Beilstein/REAXYS Number:	3571228
MDL number:	MFCD00009425
PubChem Substance ID:	329769497
NACRES:	NB.21

TBAOH may be used as an ion-pairing reagent in mobile phase preparation for reverse phase ion-pair high performance liquid chromatography during chromium (III) and chromium (VI) determination.

Caution

may crystallize; can be redissolved on heating (max. 40°C)

Linkage

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Reagent suitable for use in ion chromatography

Quality Level	100
description	cationic
concentration	~40% in water
application(s)	ion chromatography: suitable
impurities	0.01% halides (as bromide)
density	0.995 g/cm³
anion traces	sulfate (SO₄^2-): 100 mg/kg
cation traces	K: 100 mg/kg, Na: 100 mg/kg
SMILES string	[OH-].CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.H2O/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H2/q+1;/p-1
InChI key	VDZOOKBUILJEDG-UHFFFAOYSA-M

Tetrabutylammonium iodide is an ion-pair chromatography (IPC) reagent suitable for anionic separation sorted by carbon chain length.

pictograms	GHS05,GHS07
signalword	Danger
hcodes	H314 - H317
pcodes	P261 - P272 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
Personal Protective Equipment	Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
RIDADR	UN 3267 8 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium iodide

Empirical Formula (Hill Notation):	C₁₆H₃₆IN
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(I)
CAS Number:	311-28-4
Molecular Weight:	369.37
Beilstein/REAXYS Number:	3916152
EC Number:	206-220-5
MDL number:	MFCD00011636
PubChem Substance ID:	329769349
NACRES:	NB.21

Tetrabutylammonium iodide may be used as a mobile phase additive in ion-pair high-performance liquid chromatography (IP-HPLC) assay of 4-aminopyridine in serum. Tetrabutylammonium iodide may also be used as a mobile phase additive in the analysis of tetracycline by reversed-phase IPC. The addition of tetrabutylammonium iodide regulates the retention of tetracyclines.

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT), 99.0%
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	141-143 °C (lit.), 144-146 °C
	10 % in acetonitrile
UV absorption	: 290 nm A_max: 0.1, : 300 nm A_max: 0.05, : 320 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[I-].CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.HI/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H/q+1;/p-1
InChI key	DPKBAXPHAYBPRL-UHFFFAOYSA-M

Tetrabutylammonium perchlorate (TBAP) is a quaternary ammonium salt, mainly used as electrolyte.
Visit our Sensor Applications portal to learn more.

pictograms	GHS07
signalword	Warning
hcodes	H302
pcodes	P301 + P312 + P330
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium perchlorate

Empirical Formula (Hill Notation):	C₁₆H₃₆ClNO₄
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(ClO₄)
CAS Number:	1923-70-2
Molecular Weight:	341.91
Beilstein/REAXYS Number:	3579274
EC Number:	217-655-5
MDL number:	MFCD00038722
PubChem Substance ID:	329769341

TBAP has been used as solvent in preparing standard stock solutions, for HPLC analysis of Sudan azo-dyes food samples. It may be used as an electrophoretic buffer to rinse the capillary for the nonaqueous capillary electrophoresis (NACE) determination of atropine, anisodamine, and scopolamine in Flos daturae plant extract.

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (T), ≥99.0%
mp	211-215 °C
solubility	acetonitrile: 0.1 g/mL, clear, colorless
SMILES string	[O-]Cl(=O)(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.ClHO4/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;2-1(3,4)5/h5-16H2,1-4H3;(H,2,3,4,5)/q+1;/p-1
InChI key	KBLZDCFTQSIIOH-UHFFFAOYSA-M

Concentrate for 6x1 L ready-to-use solution. Dilute contents of one ampule (~0.3 M) to 1 L with HPLC grade water to obtain a 0.005 M eluent solution.
Tetrabutylammonium dihydrogen phosphate is a quaternary ammonium salt mainly used as electrolyte.

pictograms	GHS03,GHS07
signalword	Danger
hcodes	H272 - H315 - H319 - H335
pcodes	P210 - P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	Eyeshields, Gloves, type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
RIDADR	UN 1479 5.1 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium phosphate monobasic solution

Empirical Formula (Hill Notation):	C₁₆H₃₈NO₄P
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N[OP(OH)₂O]
CAS Number:	5574-97-0
Molecular Weight:	339.45
Beilstein/REAXYS Number:	5196532
MDL number:	MFCD00064526
PubChem Substance ID:	329769345
NACRES:	NB.21

Tetrabutylammonium dihydrogen phosphate has been used as ion-pairing reagent in mobile phase for ion-pair HPLC analysis of 5′-mononucleotides from baby formulae. It may also have been used in mobile phase for HPLC analysis of blood samples to determine acetaminophen.

Ion-pairing reagent used in reversed phase chromatography

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
quality	LiChropur^™, ampule
packaging	ampule of 25 mL
application(s)	HPLC: suitable, ion pair chromatography: suitable
	in concentrate
UV absorption	: 210 nm A_max: 0.05, : 220 nm A_max: 0.04, : 300 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
storage temp.	2-8°C
SMILES string	OP(O)([O-])=O.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.H3O4P/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H3,1,2,3,4)/q+1;/p-1
InChI key	ARRNBPCNZJXHRJ-UHFFFAOYSA-M

Tetrabutylammonium tetrafluoroborate (TBATFB) is a quaternary ammonium salt, mainly used as electrolyte.
Visit our Sensor Applications portal to learn more.

RIDADR	NONH for all modes of transport
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrabutylammonium tetrafluoroborate

Empirical Formula (Hill Notation):	C₁₆H₃₆BF₄N
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N(BF₄)
CAS Number:	429-42-5
Molecular Weight:	329.27
Beilstein/REAXYS Number:	3577508
EC Number:	207-058-8
MDL number:	MFCD00011634
PubChem Substance ID:	329769343

TBATFB has been used as an electrolyte to understand the paraffin graphite powder modified with sweet potato tissue (PCPET) electrode response.

grade	for electrochemical analysis
Quality Level	200
assay	≥99.0% (T), ≥99.0%
mp	155-161 °C (lit.), 159-162 °C
solubility	methanol: 0.1 g/mL, clear, colorless
SMILES string	F[B-](F)(F)F.CCCC[N+](CCCC)(CCCC)CCCC
InChI	1S/C16H36N.BF4/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;2-1(3,4)5/h5-16H2,1-4H3;/q+1;-1
InChI key	NNZZSJSQYOFZAM-UHFFFAOYSA-N

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pictograms	GHS05,GHS07
signalword	Danger
hcodes	H302 - H315 - H318 - H335
pcodes	P280 - P301 + P312 + P330 - P302 + P352 - P305 + P351 + P338 + P310
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	No data available
Flash Point C	No data available

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Tetrabutylammonium tetraphenylborate

Empirical Formula (Hill Notation):	C₄₀H₅₆BN
Linear Formula:	(CH₃CH₂CH₂CH₂)₄N[B(C₆H₅)₄]
CAS Number:	15522-59-5
Molecular Weight:	561.69
Beilstein/REAXYS Number:	3857215
EC Number:	239-562-9
MDL number:	MFCD00011749
PubChem Substance ID:	329769344
NACRES:	NB.61

Supporting electrolyte (e.g. calibration of conductometric cells)

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (NT), ≥99.0%
mp	230-236 °C (lit.), 233-237 °C
solubility	acetonitrile: 0.1 g/mL, clear, colorless
SMILES string	CCCC[N+](CCCC)(CCCC)CCCC.c1ccc(cc1)[B-](c2ccccc2)(c3ccccc3)c4ccccc4
InChI	1S/C24H20B.C16H36N/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4/h1-20H;5-16H2,1-4H3/q-1;+1
InChI key	ZHCCBGAUZWZGQV-UHFFFAOYSA-N

Tetradodecylammonium nitrate (TDDAN) is a quaternary ammonium salt, mainly used as electrolyte.
Visit our Sensor Applications portal to learn more.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetradodecylammonium nitrate

Empirical Formula (Hill Notation):	C₄₈H₁₀₀N₂O₃
Linear Formula:	[CH₃(CH₂)₁₀CH₂]₄N(NO₃)
CAS Number:	63893-35-6
Molecular Weight:	753.32
EC Number:	264-548-4
MDL number:	MFCD00467971
PubChem Substance ID:	329769515
NACRES:	NB.61

Selected application examples
TDDAN has been used as solvent in the preparation of microelectrodes based on AgI-Ag2O-V2O5 glass transducer.
Ion-pair suitable for a nitrate-selective field-effect transistor membrane.

Bottomless glass bottle. Contents are inside inserted fused cone.

Ion-pair suitable for a nitrate-selective field-effect transistor membrane

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
assay	99.0% (NT), 99.0%
mp	103-105 °C
SMILES string	[O-][N+]([O-])=O.CCCCCCCCCCCC[N+](CCCCCCCCCCCC)(CCCCCCCCCCCC)CCCCCCCCCCCC
InChI	1S/C48H100N.NO3/c1-5-9-13-17-21-25-29-33-37-41-45-49(46-42-38-34-30-26-22-18-14-10-6-2,47-43-39-35-31-27-23-19-15-11-7-3)48-44-40-36-32-28-24-20-16-12-8-4;2-1(3)4/h5-48H2,1-4H3;/q+1;-1
InChI key	AHQMUYHFUYRUJV-UHFFFAOYSA-N

Visit our Sensor Applications portal to learn more.
ETH 500 is a lipophilic electrolyte mostly used as an anionic additive.

pictograms	GHS02,GHS07
signalword	Warning
hcodes	H228 - H315 - H319 - H335
pcodes	P210 - P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	UN1325 - class 4.1 - PG 3 - Flammable solids, organic, n.o.s., HI: all
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetradodecylammonium tetrakis(4-chlorophenyl)borate

Empirical Formula (Hill Notation):	C₇₂H₁₁₆BCl₄N
CAS Number:	100581-42-8
Molecular Weight:	1148.32
Beilstein/REAXYS Number:	8894894
MDL number:	MFCD00145372
PubChem Substance ID:	329769516
NACRES:	NB.61

ETH 500 has been used in the preparation of:

molecularly imprinted polymers, which can be used during potentiometric sensing method for determining neutral phenols.
copolymer Ca2+ selective membrane cocktail during electrochemical impedance spectroscopic analysis to study the water intake and layer formation in ion-selective electrode.

Highly lipophilic additive for membranes of neutral carrier-based ion-selective macroelectrodes; Additive in membranes of optodes

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
mp	79-80 °C
SMILES string	Clc1ccc(cc1)[B-](c2ccc(Cl)cc2)(c3ccc(Cl)cc3)c4ccc(Cl)cc4.CCCCCCCCCCCC[N+](CCCCCCCCCCCC)(CCCCCCCCCCCC)CCCCCCCCCCCC
InChI	1S/C48H100N.C24H16BCl4/c1-5-9-13-17-21-25-29-33-37-41-45-49(46-42-38-34-30-26-22-18-14-10-6-2,47-43-39-35-31-27-23-19-15-11-7-3)48-44-40-36-32-28-24-20-16-12-8-4;26-21-9-1-17(2-10-21)25(18-3-11-22(27)12-4-18,19-5-13-23(28)14-6-19)20-7-15-24(29)16-8-20/h5-48H2,1-4H3;1-16H/q+1;-1
InChI key	OKKRVCFTMNLHTL-UHFFFAOYSA-N

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pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium benzoate

Empirical Formula (Hill Notation):	C₁₅H₂₅NO₂
Linear Formula:	(CH₃CH₂)₄N(C₆H₅COO)
CAS Number:	16909-22-1
Molecular Weight:	251.36
Beilstein/REAXYS Number:	5367653
EC Number:	240-957-3
MDL number:	MFCD00041976
PubChem Substance ID:	329769517
NACRES:	NB.61

Supporting electrolyte

grade	for electrochemical analysis
Quality Level	100
assay	99.0% (NT), 99.0%
solubility	H₂O: 0.1 g/mL, clear, colorless
SMILES string	CC[N+](CC)(CC)CC.[O-]C(=O)c1ccccc1
InChI	1S/C8H20N.C7H6O2/c1-5-9(6-2,7-3)8-4;8-7(9)6-4-2-1-3-5-6/h5-8H2,1-4H3;1-5H,(H,8,9)/q+1;/p-1
InChI key	CIFIGXMZHITUAZ-UHFFFAOYSA-M

The use of ion-pairing reagents as mobile phase additives allows the separation of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is of utmost importance to their successful application. Sigma-Aldrich offers an outstanding range of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) determination. All mobile phase additives are subject to rigorous testing with special emphasis on the requirements of modern reversed phase HPLC:

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium bromide

Empirical Formula (Hill Notation):	C₈H₂₀BrN
Linear Formula:	(C₂H₅)₄N(Br)
CAS Number:	71-91-0
Molecular Weight:	210.16
Beilstein/REAXYS Number:	3563430
EC Number:	200-769-4
MDL number:	MFCD00011825
PubChem Substance ID:	329769472
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT), 99.0%
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	285 °C (dec.) (lit.)
	10 % in H₂O
UV absorption	: 240 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].CC[N+](CC)(CC)CC
InChI	1S/C8H20N.BrH/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H/q+1;/p-1
InChI key	HWCKGOZZJDHMNC-UHFFFAOYSA-M

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Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium chloride

Empirical Formula (Hill Notation):	C₈H₂₀ClN
Linear Formula:	(C₂H₅)₄N(Cl)
CAS Number:	56-34-8
Molecular Weight:	165.70
Beilstein/REAXYS Number:	3563247
EC Number:	200-267-5
MDL number:	MFCD00011828
PubChem Substance ID:	329769476
NACRES:	NB.61

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (AT), ≥99.0%
solubility	methanol: 0.1 g/mL, clear, colorless
SMILES string	[Cl-].CC[N+](CC)(CC)CC
InChI	1S/C8H20N.ClH/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H/q+1;/p-1
InChI key	YMBCJWGVCUEGHA-UHFFFAOYSA-M

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Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium hexafluorophosphate

Empirical Formula (Hill Notation):	C₈H₂₀F₆NP
Linear Formula:	(C₂H₅)₄N(PF₆)
CAS Number:	429-07-2
Molecular Weight:	275.22
Beilstein/REAXYS Number:	3748868
EC Number:	207-056-7
MDL number:	MFCD00043179
PubChem Substance ID:	329769479
NACRES:	NB.61

Supporting electrolyte

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (T), ≥99.0%
mp	≥300 °C (lit.)
solubility	acetonitrile: 0.1 g/mL, clear, colorless
SMILES string	F[P-](F)(F)(F)(F)F.CC[N+](CC)(CC)CC
InChI	1S/C8H20N.F6P/c1-5-9(6-2,7-3)8-4;1-7(2,3,4,5)6/h5-8H2,1-4H3;/q+1;-1
InChI key	KLKUOIXSIDDDCN-UHFFFAOYSA-N

Tetraethylammonium hydrogen sulfate is an ion-pair chromatography (IPC) reagent suitable for anionic separation sorted by carbon chain length.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium hydrogen sulfate

Empirical Formula (Hill Notation):	C₈H₂₁NO₄S
Linear Formula:	(C₂H₅)₄N(HSO₄)
CAS Number:	16873-13-5
Molecular Weight:	227.32
Beilstein/REAXYS Number:	6590581
EC Number:	240-899-9
MDL number:	MFCD00036150
PubChem Substance ID:	329769480
NACRES:	NB.21

Tetraethylammonium hydrogen sulfate may be used as an ion pair reagent for the analysis of sulfonated aliphatic and aromatic surfactants in sewage sludge by ion-pair/supercritical fluid extraction and derivatization gas chromatography/mass spectrometry.

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (T), 99.0%
quality	LiChropur^™
application(s)	HPLC: suitable, ion pair chromatography: suitable
mp	243-245 °C
	10 % in H₂O
UV absorption	: 210 nm A_max: 0.05, : 220 nm A_max: 0.04, : 230 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
SMILES string	OS([O-])(=O)=O.CC[N+](CC)(CC)CC
InChI	1S/C8H20N.H2O4S/c1-5-9(6-2,7-3)8-4;1-5(2,3)4/h5-8H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
InChI key	CREVBWLEPKAZBH-UHFFFAOYSA-M

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Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium hydroxide solution

Empirical Formula (Hill Notation):	C₈H₂₁NO
Linear Formula:	(C₂H₅)₄N(OH)
CAS Number:	77-98-5
Molecular Weight:	147.26
Beilstein/REAXYS Number:	3912961
MDL number:	MFCD00009024
PubChem Substance ID:	329769483
NACRES:	NB.61

grade	electrochemical grade
Quality Level	200
concentration	~1.0 M (CH₃CH₂)₄NOH in H₂O
SMILES string	[OH-].CC[N+](CC)(CC)CC
InChI	1S/C8H20N.H2O/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H2/q+1;/p-1
InChI key	LRGJRHZIDJQFCL-UHFFFAOYSA-M

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pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P280 - P305 + P351 + P338 - P310
Personal Protective Equipment	Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
RIDADR	UN 3267 8 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraethylammonium tetrafluoroborate

Empirical Formula (Hill Notation):	C₈H₂₀BF₄N
Linear Formula:	(C₂H₅)₄N(BF₄)
CAS Number:	429-06-1
Molecular Weight:	217.06
Beilstein/REAXYS Number:	3917638
EC Number:	207-055-1
MDL number:	MFCD00011827
PubChem Substance ID:	329769477
NACRES:	NB.61

Supporting electrolyte

grade	for electrochemical analysis
Quality Level	100
assay	≥99.0% (T), ≥99.0%
mp	≥300 °C (lit.)
solubility	acetonitrile: 0.1 g/mL, clear, colorless
SMILES string	F[B-](F)(F)F.CC[N+](CC)(CC)CC
InChI	1S/C8H20N.BF4/c1-5-9(6-2,7-3)8-4;2-1(3,4)5/h5-8H2,1-4H3;/q+1;-1
InChI key	XJRAKUDXACGCHA-UHFFFAOYSA-N

pictograms	GHS07
signalword	Warning
hcodes	H302 + H312 + H332 - H315 - H319 - H335
pcodes	P280 - P301 + P312 + P330 - P302 + P352 + P312 - P304 + P340 + P312 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraheptylammonium bromide

Empirical Formula (Hill Notation):	C₂₈H₆₀BrN
Linear Formula:	[CH₃(CH₂)₆]₄N(Br)
CAS Number:	4368-51-8
Molecular Weight:	490.69
Beilstein/REAXYS Number:	3763391
EC Number:	224-459-3
MDL number:	MFCD00011861
PubChem Substance ID:	329769521
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
mol wt	490.69 g/mol
application(s)	ion pair chromatography: suitable
mp	87-89 °C (lit.), 89-91 °C
	10 % in methanol
UV absorption	: 240 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].CCCCCCC[N+](CCCCCCC)(CCCCCCC)CCCCCCC
InChI	1S/C28H60N.BrH/c1-5-9-13-17-21-25-29(26-22-18-14-10-6-2,27-23-19-15-11-7-3)28-24-20-16-12-8-4;/h5-28H2,1-4H3;1H/q+1;/p-1
InChI key	YQIVQBMEBZGFBY-UHFFFAOYSA-M

The utilization of ion-pairing reagents as mobile phase additives allows the elution of ionic and highly polar substances using reversed phase HPLC columns. The purity of mobile phase additives is a prime factor to their successful application. Sigma-Aldrich offers an outstanding collection of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) analyzes. All mobile phase additives are rigorously tested with special emphasis on the requirements of modern reversed phase HPLC:

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrahexylammonium bromide

Empirical Formula (Hill Notation):	C₂₄H₅₂BrN
Linear Formula:	[CH₃(CH₂)₅]₄N(Br)
CAS Number:	4328-13-6
Molecular Weight:	434.58
Beilstein/REAXYS Number:	3637302
EC Number:	224-363-1
MDL number:	MFCD00011858
PubChem Substance ID:	329769522
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	99-100 °C (lit.)
	10 % in methanol
UV absorption	: 240 nm A_max: 0.06, : 250 nm A_max: 0.04, : 260 nm A_max: 0.03, : 500 nm A_max: 0.03
suitability	corresponds to standard for filter test
SMILES string	[Br-].CCCCCC[N+](CCCCCC)(CCCCCC)CCCCCC
InChI	1S/C24H52N.BrH/c1-5-9-13-17-21-25(22-18-14-10-6-2,23-19-15-11-7-3)24-20-16-12-8-4;/h5-24H2,1-4H3;1H/q+1;/p-1
InChI key	SYZCZDCAEVUSPM-UHFFFAOYSA-M

Tetrahexylammonium hydrogensulfate is a quaternary ammonium salt mainly used as an electrolyte.

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrahexylammonium hydrogensulfate

Empirical Formula (Hill Notation):	C₂₄H₅₃NO₄S
Linear Formula:	[CH₃(CH₂)₅]₄N(HSO₄)
CAS Number:	32503-34-7
Molecular Weight:	451.75
Beilstein/REAXYS Number:	4629729
EC Number:	251-069-0
MDL number:	MFCD00037675
PubChem Substance ID:	329769575
NACRES:	NB.21

Tetrahexylammonium hydrogensulfate may have been used as a phase-transfer catalyst during catalysis analysis of benzylic halide to carboxylic acid.

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (T)
quality	LiChropur^™
application(s)	HPLC: suitable, ion pair chromatography: suitable
mp	98-100 °C (lit.), 99-102 °C
	10 % in acetonitrile
UV absorption	: 210 nm A_max: 0.10, : 220 nm A_max: 0.04, : 230 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
SMILES string	OS([O-])(=O)=O.CCCCCC[N+](CCCCCC)(CCCCCC)CCCCCC
InChI	1S/C24H52N.H2O4S/c1-5-9-13-17-21-25(22-18-14-10-6-2,23-19-15-11-7-3)24-20-16-12-8-4;1-5(2,3)4/h5-24H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
InChI key	RULHPTADXJPDSN-UHFFFAOYSA-M

Ion-pairing reagents as mobile phase additives enable the separation of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is a most important parameter to be considered for their successful application. Sigma-Aldrich has a broad-range of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) determinations. All mobile phase additives are subjected to rigorous testing with special emphasis on the needs of modern reversed phase HPLC:

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrakis(decyl)ammonium bromide

Empirical Formula (Hill Notation):	C₄₀H₈₄BrN
Linear Formula:	[CH₃(CH₂)₉]₄N(Br)
CAS Number:	14937-42-9
Molecular Weight:	659.01
Beilstein/REAXYS Number:	5842649
EC Number:	239-013-3
MDL number:	MFCD00043166
PubChem Substance ID:	329769586
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
mol wt	659.01 g/mol
application(s)	ion pair chromatography: suitable
mp	87-90 °C
	10 % in methanol
UV absorption	: 240 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].CCCCCCCCCC[N+](CCCCCCCCCC)(CCCCCCCCCC)CCCCCCCCCC
InChI	1S/C40H84N.BrH/c1-5-9-13-17-21-25-29-33-37-41(38-34-30-26-22-18-14-10-6-2,39-35-31-27-23-19-15-11-7-3)40-36-32-28-24-20-16-12-8-4;/h5-40H2,1-4H3;1H/q+1;/p-1
InChI key	AHNISXOXSNAHBZ-UHFFFAOYSA-M

The application of ion-pairing reagents as mobile phase additives ensures the elution of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is of foremost significance for their successful utilization. Sigma-Aldrich offers a huge variety of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) separations. All mobile phase additives are investigated thoroughly with special regard to the requirements of modern reversed phase HPLC:

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetramethylammonium bisulfate

Empirical Formula (Hill Notation):	C₄H₁₃NO₄S
Linear Formula:	(CH₃)₄N(HSO₄)
CAS Number:	80526-82-5
Molecular Weight:	171.22
Beilstein/REAXYS Number:	4829202
EC Number:	279-490-5
MDL number:	MFCD00036149
PubChem Substance ID:	329769602
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (T)
quality	LiChropur^™
application(s)	HPLC: suitable, ion pair chromatography: suitable
	10 % in H₂O
UV absorption	: 210 nm A_max: 0.05, : 220 nm A_max: 0.04, : 230 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
SMILES string	C[N+](C)(C)C.OS([O-])(=O)=O
InChI	1S/C4H12N.H2O4S/c2*1-5(2,3)4/h1-4H3;(H2,1,2,3,4)/q+1;/p-1
InChI key	DWTYPCUOWWOADE-UHFFFAOYSA-M

Ion-pairing reagents, when used as mobile phase additives, promote the analysis of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is of highest significance for their effective application. Sigma-Aldrich makes available a variety of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) separations. All mobile phase additives are tested thoroughly with special consideration on the demands of modern reversed phase HPLC:

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetramethylammonium bromide

Empirical Formula (Hill Notation):	C₄H₁₂BrN
Linear Formula:	(CH₃)₄N(Br)
CAS Number:	64-20-0
Molecular Weight:	154.05
Beilstein/REAXYS Number:	3620955
EC Number:	200-581-2
MDL number:	MFCD00011626
PubChem Substance ID:	329769598
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	>300 °C (lit.)
	10 % in H₂O
UV absorption	: 240 nm A_max: 0.06, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].C[N+](C)(C)C
InChI	1S/C4H12N.BrH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
InChI key	DDFYFBUWEBINLX-UHFFFAOYSA-M

Tetramethylammonium chloride (TMAC) is structurally similar to alkyltrimethylammonium salts. Oxidation of TMAC yields formaldehyde and trimethlamine. It is considered as poor phase-transfer catalyst for most reactions as it is insoluble in organic media. However, it is highly suitable as phase-transfer catalyst for fluorination of chlorobenzaldehydes along with alkali metal fluorides which yield 1,2,2,2-tetrafluoroethyldifluoromethyl ether.

pictograms	GHS06
signalword	Danger
hcodes	H300
pcodes	P301 + P330 + P331 + P310
Personal Protective Equipment	Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
RIDADR	UN 2811 6.1 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetramethylammonium chloride

Empirical Formula (Hill Notation):	C₄H₁₂ClN
Linear Formula:	(CH₃)₄N(Cl)
CAS Number:	75-57-0
Molecular Weight:	109.60
Beilstein/REAXYS Number:	3911201
EC Number:	200-880-8
MDL number:	MFCD00011628
PubChem Substance ID:	329765550
NACRES:	NB.21

TMAC may be used in ion-exchange procedures to show the increase of pH in understanding the chemical behaviour of catalyst [CTA]Si-MCM-41 using Knoevenagel condensation model.

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	>300 °C (lit.)
	10 % in H₂O
UV absorption	: 220 nm A_max: 0.05, : 230 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
SMILES string	[Cl-].C[N+](C)(C)C
InChI	1S/C4H12N.ClH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
InChI key	OKIZCWYLBDKLSU-UHFFFAOYSA-M

Visit our Sensor Applications portal to learn more.
Tetraoctylammonium bromide (TOAB) is an ionophore or recognition element mostly used in potentiometric sensors.

pictograms	GHS06,GHS08,GHS09
signalword	Danger
hcodes	H300 - H311 - H315 - H370 - H411
pcodes	P260 - P264 - P273 - P280 - P301 + P310 - P302 + P352 + P312
Target Organs	Central nervous system
Personal Protective Equipment	Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
RIDADR	UN 2811 6.1 / PGII
WGK Germany	WGK 1

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Tetraoctylammonium bromide

Empirical Formula (Hill Notation):	C₃₂H₆₈BrN
Linear Formula:	[CH₃(CH₂)₇]₄N(Br)
CAS Number:	14866-33-2
Molecular Weight:	546.79
Beilstein/REAXYS Number:	4169176
EC Number:	238-936-9
MDL number:	MFCD00011863
PubChem Substance ID:	329769624
NACRES:	NB.61

TOAB has been used as recognition element in formulating potentiometric membrane to develop an electronic tongue system for monitoring nitrogen species level in water samples.

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
mp	95-98 °C (lit.), 98-100 °C
SMILES string	[Br-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC
InChI	1S/C32H68N.BrH/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;/h5-32H2,1-4H3;1H/q+1;/p-1
InChI key	QBVXKDJEZKEASM-UHFFFAOYSA-M

Tetraoctylammonium nitrate (TOAN) is an ionophore or recognition element mostly used in potentiometric sensors.
Visit our Sensor Applications portal to learn more.

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetraoctylammonium nitrate

Empirical Formula (Hill Notation):	C₃₂H₆₈N₂O₃
Linear Formula:	[CH₃(CH₂)₆CH₂]₄N(NO₃)
CAS Number:	33734-52-0
Molecular Weight:	528.89
Beilstein/REAXYS Number:	7108220
MDL number:	MFCD00525561
PubChem Substance ID:	329769620
NACRES:	NB.61

TOAN has been used as recognition element in formulating potentiometric membrane to develop an electronic tongue system for monitoring nitrogen species level in water samples.

Bottomless glass bottle. Contents are inside inserted fused cone.

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
assay	99.0% (NT), 99.0%
impurities	0.05% halides (as bromide)
mp	112-114 °C
SMILES string	[O-][N+]([O-])=O.CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC
InChI	1S/C32H68N.NO3/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;2-1(3)4/h5-32H2,1-4H3;/q+1;-1
InChI key	MJHKPBXGJMKYAY-UHFFFAOYSA-N

Tetrapentylammonium bromide is a quaternary ammonium bromide, with pentyl chains and a bromide counter-ion, which is widely used as an ion-pair reagent in analytical applications.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrapentylammonium bromide

Empirical Formula (Hill Notation):	C₂₀H₄₄NBr
Linear Formula:	[CH₃(CH₂)₄]₄N(Br)
CAS Number:	866-97-7
Molecular Weight:	378.47
Beilstein/REAXYS Number:	3658171
EC Number:	212-756-0
MDL number:	MFCD00011856
PubChem Substance ID:	329769626
NACRES:	NB.21

Tetrapentylammonium bromide may be used as a standard, to examine the effects of annealing membranes formed by mixture-casting ”Nafion” mainly based on the selectivity, ion-exchange capacity, and mass transport in the membranes. It may also be used as an ion pair reagent in the analysis of antioxidant phenolic compounds in wines, juices using two-dimensional liquid chromatography and sulfonated lignins in agrochemical formulations using one-, two-dimensional liquid chromatography techniques.

Additive used in ion-pair chromatography; Induces longer retention times than does the tetrabutyl homologue

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
mp	100-101 °C (lit.)
	10 % in methanol
UV absorption	: 240 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].CCCCC[N+](CCCCC)(CCCCC)CCCCC
InChI	1S/C20H44N.BrH/c1-5-9-13-17-21(18-14-10-6-2,19-15-11-7-3)20-16-12-8-4;/h5-20H2,1-4H3;1H/q+1;/p-1
InChI key	SPALIFXDWQTXKS-UHFFFAOYSA-M

The role of ion-pairing reagents as mobile phase additives is to ensure easy separation of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is a crucial factor for their optimal operation. Sigma-Aldrich consists of a wide variety of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) separation. All mobile phase additives have been subject to thorough testing with a special focus on the requisites of modern reversed phase HPLC:

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrapropylammonium bisulfate

Empirical Formula (Hill Notation):	C₁₂H₂₉NO₄S
CAS Number:	56211-70-2
Molecular Weight:	283.43
Beilstein/REAXYS Number:	6833419
MDL number:	MFCD00038764
PubChem Substance ID:	329769634
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (T), 99.0%
quality	LiChropur^™
application(s)	HPLC: suitable, ion pair chromatography: suitable
mp	158-160 °C
	10 % in H₂O
UV absorption	: 210 nm A_max: 0.05, : 220 nm A_max: 0.04, : 230 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for RP gradient test, corresponds to standard for filter test
SMILES string	OS([O-])(=O)=O.CCC[N+](CCC)(CCC)CCC
InChI	1S/C12H28N.H2O4S/c1-5-9-13(10-6-2,11-7-3)12-8-4;1-5(2,3)4/h5-12H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
InChI key	MOXJKKOSZCHGEU-UHFFFAOYSA-M

The ion-pairing reagents, when utilized as mobile phase additives, enable the elution of ionic and highly polar analytes on reversed phase HPLC columns. The purity of mobile phase additives is quintessential for their successful use. Sigma-Aldrich has a large collection of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) determinations. All mobile phase additives are rigorously examined with special focus on the necessities of modern reversed phase HPLC:

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrapropylammonium bromide

Empirical Formula (Hill Notation):	C₁₂H₂₈BrN
Linear Formula:	(CH₃CH₂CH₂)₄N(Br)
CAS Number:	1941-30-6
Molecular Weight:	266.26
Beilstein/REAXYS Number:	3567846
EC Number:	217-727-6
MDL number:	MFCD00011840
PubChem Substance ID:	329769631
NACRES:	NB.21

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
description	cationic
assay	99.0% (AT)
quality	LiChropur^™
application(s)	ion pair chromatography: suitable
	10 % in H₂O
UV absorption	: 240 nm A_max: 0.04, : 250 nm A_max: 0.03, : 260 nm A_max: 0.02, : 500 nm A_max: 0.02
suitability	corresponds to standard for filter test
SMILES string	[Br-].CCC[N+](CCC)(CCC)CCC
InChI	1S/C12H28N.BrH/c1-5-9-13(10-6-2,11-7-3)12-8-4;/h5-12H2,1-4H3;1H/q+1;/p-1
InChI key	BGQMOFGZRJUORO-UHFFFAOYSA-M

Visit our Sensor Applications portal to learn more.
TTF-TCNQ is an organic metal-like charge transfer complex, which is mostly used as an electrode.

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Tetrathiafulvalene 7,7,8,8-tetracyanoquinodimethane salt

Empirical Formula (Hill Notation):	C₆H₄S₄ · C₁₂H₄N₄
CAS Number:	40210-84-2
Molecular Weight:	408.54
MDL number:	MFCD10566936
PubChem Substance ID:	329769924
NACRES:	NB.61

TTF-TCNQ has been used in sensor fabrication during amperometric lactate biosensor development for qualitative analysis of lactate accumulation in ischemic myocardium patients.

Quality Level	200
grade	for ion-selective electrodes
assay	≥97.0% (CHNS)
mp	~230 °C (dec.)
SMILES string	S1C=CS\C1=C2/SC=CS2.N#C\C(C#N)=C3\C=CC(\C=C3)=C(\C#N)C#N
InChI	1S/C12H4N4.C6H4S4/c13-5-11(6-14)9-1-2-10(4-3-9)12(7-15)8-16;1-2-8-5(7-1)6-9-3-4-10-6/h1-4H;1-4H
InChI key	OIXMVDHMELKBDX-UHFFFAOYSA-N

Assay (argentometric): 99.0 %
Identity (IR-spectrum): passes test
Melting point: 111 - 114 °C
Heavy metals (as Pb): 0.001 %
Fe (Iron): 0.0005 %
Sulfated ash: 0.1 %

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Thioacetamide

Empirical Formula (Hill Notation):	C₂H₅NS
CAS Number:	62-55-5
Molecular Weight:	75.13
MDL number:	MFCD00008070
EC Index Number:	200-541-4

Description: clear, colourless liquid
Identity: conforms
Assay (iodometric): 99 %
Solubility (USP): conforms
Sensitivity (USP): conforms
Fe (Iron): 0.00005 %
Organic bound chlorine: 0.01 %
Sulfated ash: 0.05 %
The statement of the assay applies to the test date.Agradual substance-specific content reduction,especially at higher temperatures,must be expected.

storage conditions	Store below +30°C.
Quality Level	100
grade	ACS reagent
Agency/Method	reag. Ph. Eur.
potency	301 mg/kg LD₅₀, oral (Rat)
pH	5.2 (20 °C, 100 g/L in H₂O)
mp	111-114 °C
solubility	163 g/L
density	1.37 g/cm³
bulk density	600 kg/m³
storage temp.	2-30°C
InChI	1S/C2H5NS/c1-2(3)4/h1H3,(H2,3,4)
InChI key	YUKQRDCYNOVPGJ-UHFFFAOYSA-N

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Thioglycolic acid

Empirical Formula (Hill Notation):	C₂H₄O₂S
CAS Number:	68-11-1
Molecular Weight:	92.12
MDL number:	MFCD00004876
EC Index Number:	200-677-4

Thioglycolic acid is an organic colourless compound with thiol and carboxylic acid as functional group. It is mainly used to make depilatories. It is considered to be corrosive to metals and tissues.

storage conditions	Store at +2°C to +8°C.
Agency/Method	reag. Ph. Eur.
Quality Level	100
vapor pressure	0.1 hPa ( 20 °C)
potency	73 mg/kg LD₅₀, oral (Rat)
pH	1 (20 °C in H₂O)
bp	220 °C/1013 hPa (decomposition)
mp	-16.5 °C
transition temp	flash point 131.5 °C
density	1.325 g/cm³ at 20 °C
storage temp.	2-8°C
InChI	1S/C2H4O2S/c3-2(4)1-5/h5H,1H2,(H,3,4)
InChI key	CWERGRDVMFNCDR-UHFFFAOYSA-N

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Thioglycolic acid solution

Empirical Formula (Hill Notation):	C₂H₄O₂S
Linear Formula:	HSCH₂COOH
CAS Number:	68-11-1
Molecular Weight:	92.12
Beilstein/REAXYS Number:	506166
MDL number:	MFCD00004876
PubChem Substance ID:	329769667
NACRES:	NA.21

Mercaptoacetic acid has been used as a stabilizer for preparation of silver colloids, in a UV-vis spectroscopy study to establish stable and highly surface-enhanced Raman spectroscopy (SERS)-active silver colloids.

Reagent for the extraction and spectrophotometric determination of various transition metals, e.g. Pd; W; Mo; Ti

quality	for spectrophotometric det. of palladium, iron, uranium(VI), molybdates and nitrites
Quality Level	100
concentration	~80% in H₂O
application(s)	UV/Vis spectroscopy: suitable
refractive index	n20/D 1.471
density	1.265 g/mL at 20 °C
SMILES string	OC(=O)CS
InChI	1S/C2H4O2S/c3-2(4)1-5/h5H,1H2,(H,3,4)
InChI key	CWERGRDVMFNCDR-UHFFFAOYSA-N

Assay: 99.0 %
Identity (IR-spectrum): passes test
Appearance of solution (50 g/l; water): Clear to almost clear and colorless.
Melting point: 174 - 178 °C
Fe (Iron): 0.0005 %
Sulfated ash (600°C): 0.1 %
Loss on Drying (105°C): 0.5 %
Sensitivity to bismuth: passes test
Corresponds to ACS, Reag. Ph Eur

pictograms	GHS05,GHS06
signalword	Danger
hcodes	H301 + H331 - H312 - H314 - H317
pcodes	P261 - P270 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
Personal Protective Equipment	Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
RIDADR	UN 1940 8 / PGII
WGK Germany	WGK 1
Flash Point F	266.0 °F - closed cup
Flash Point C	130 °C - closed cup

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Thiourea

Empirical Formula (Hill Notation):	CH₄N₂S
CAS Number:	62-56-6
Molecular Weight:	76.12
MDL number:	MFCD00008067
EC Index Number:	200-543-5

Thymolphthalien is an acid-base indicator which is colourless in acidic form and deep blue in basic form. Acidic form retains hydrogen on each hydroxyl group. It is suitable in preparing disappearing ink.

storage conditions	Store at +15°C to +25°C.
Quality Level	200
grade	ACS reagent
Agency/Method	reag. Ph. Eur.
autoignition temp.	440 °C (Dust)
potency	1750 mg/kg LD₅₀, oral (Rat), >2800 mg/kg LD₅₀, skin (Rabbit)
pH	6-8 (20 °C, 50 g/L in H₂O)
mp	169-173 °C
solubility	137 g/L
density	1.405 g/cm³ at 20 °C
bulk density	640 kg/m³
storage temp.	15-25°C
InChI	1S/CH4N2S/c2-1(3)4/h(H4,2,3,4)
InChI key	UMGDCJDMYOKAJW-UHFFFAOYSA-N

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Thymolphthalein

Empirical Formula (Hill Notation):	C₂₈H₃₀O₄
CAS Number:	125-20-2
Molecular Weight:	430.54
Beilstein/REAXYS Number:	359413
EC Number:	204-729-7
MDL number:	MFCD00005909
PubChem Substance ID:	329769727
NACRES:	NA.21

Thymolphthalein was suitable as indicator during titration of hyamine hydroxide.

Quality Level	200
grade	ACS reagent, indicator (pH 8.8-10.5)
application(s)	UV/Vis spectroscopy: suitable, titration: suitable
ign. residue	≤1%
mp	248-254 °C, 251-253 °C (lit.)
SMILES string	CC(C)c1cc(c(C)cc1O)C2(OC(=O)c3ccccc23)c4cc(C(C)C)c(O)cc4C
InChI	1S/C28H30O4/c1-15(2)20-13-23(17(5)11-25(20)29)28(22-10-8-7-9-19(22)27(31)32-28)24-14-21(16(3)4)26(30)12-18(24)6/h7-16,29-30H,1-6H3
InChI key	LDKDGDIWEUUXSH-UHFFFAOYSA-N

Timestrip® PLUS indicators record elapsed time at or above a specified threshold temperature in a simple and quick way. They are small, self-adhesive labels that can be attached to or integrated into a product or device.
Visit our Timestrip Web Portal to learn more

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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Timestrip Plus™ 0 °C

Manual activation button on top. The "ON" window turns blue to confirm it is armed. Blue color appears in the viewing window if a breach of the threshold temperature has occurred. Cumulative duration of all breaches is shown by progress of blue dye along time markers.

92210-10EA: 10 labels in sachet
92210-100EA: 100 labels in sachet
92210-500EA: 500 labels in sachet

Non-toxic, polymeric assembly multilayer and aluminum-plastic laminate encapsulating colored liquid chemicals

Threshold temperature: 0°C/32°F
Usage: calibrated to an isothermal temperature environment of +2°C
Time accuracy: ±15% in time under isothermal conditions

Timestrip is a registered trademark of Timestrip Limited
Timestrip Plus is a trademark of Timestrip Limited

92451-10EA: 10 labels in sachet
92451-100EA: 100 labels in sachet
92451-500EA: 500 labels in sachet

description	Irreversible, single use
quality	Quality Assurance: Produced under ISO9001:2008
shelf life	limited shelf life, expiry date on the label
storage condition	room temperature (at 20-80% humidity)
parameter	12 h run-out window (calibrated at +2 °C)
size	40 mm x 19 mm

20,08 € / 1 887 ₽

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Timestrip Plus™ 25 °C

Non-toxic, polymeric assembly multilayer and aluminum-plastic laminate encapsulating colored liquid chemicals

Threshold temperature: 25°C/77°F
Usage: calibrated to an isothermal temperature environment of +27°C
Time accuracy: ±15% in time under isothermal conditions

Timestrip is a registered trademark of Timestrip Limited
Timestrip Plus is a trademark of Timestrip Limited

Manual activation button on back. The "ON" window turns blue to confirm it is armed. Blue color appears in the viewing window if a breach of the threshold temperature has occurred. Duration of breaches is shown by progress of blue dye along time markers.

description	Irreversible, single use
quality	Quality Assurance: Produced under ISO9001:2008
shelf life	limited shelf life, expiry date on the label
storage condition	room temperature (at 20-80% humidity)
parameter	12 h run-out window (calibrated at +27 °C)
size	40 mm x 19 mm

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Timestrip PLUS™ 8 °C 48 hours

80826-10EA: 10 labels in sachet
80826-100EA: 100 labels in sachet
80826-500EA: 500 labels in sachet

Non-toxic, polymeric assembly multilayer and aluminum-plastic laminate encapsulating colored liquid chemicals

Threshold temperature: 8°C/46°F
Usage: calibrated to an isothermal temperature environment of +10°C
Time Accuracy: ±15% in time under isothermal conditions
Temperature Accuracy: ±1 °C/2 °F

Timestrip is a registered trademark of Timestrip Limited
Timestrip Plus is a trademark of Timestrip Limited

Timestrip® indicators are simple, visual reminders for any time driven event. They are small, self-adhesive labels that can be attached to or integrated into a product or device. They monitor elapsed time and indicate when key time markers and a pre-defined elapsed time have been reached.
Visit our Timestrip Web Portal to learn more

description	Irreversible, single use
quality	Quality Assurance: Produced under ISO9001:2008
shelf life	limited shelf life, expiry date on the label
storage condition	room temperature
parameter	48 h run-out window ((calibrated at +10 °C)
size	40 mm x 19 mm

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Timestrip® 1 hour

Manual activation button on top. A colored line appears to show its armed. The color progresses along time markers in the viewing window.

89148-10EA: 10 labels in sachet
89148-100EA: 100 labels in sachet
89148-500EA: 500 labels in sachet

Non-toxic, polymeric assembly multilayer and aluminum-plastic laminate encapsulating colored oils

Time Accuracy: ±15% in time under isothermal conditions
Usage: calibrated for an average temperature environment of 22°C/72°F

Timestrip is a registered trademark of Timestrip Limited