Indigo carmine

Empirical Formula (Hill Notation):	C16H8N2Na2O8S2
CAS Number:	860-22-0
Molecular Weight:	466.35
Colour Index Number:	73015
Beilstein/REAXYS Number:	4103904
EC Number:	212-728-8
MDL number:	MFCD00005723
PubChem Substance ID:	329764894
E Number:	E132
NACRES:	NA.24

Кат. номер

73436-VAR

73436-25MG

Indigo carmine (IC), a synthetic indigoid dye, belongs to the class of food dyes used to impart colorless foodstuffs a more characteristic appearance as well as to change the original color, texture of the food products and maintain natural color during processing and storage of food products.
This product is provided by Sigma-Aldrich, as a neat standard for the precise quality control of food products. In the European Union, E numbers are used as codes for food color additives. E numbers 100-199 include not only artificial food colors derived from petroleum, but also natural additives originating from sources such as vegetables, insects or mixtures made from natural foodstuffs. IC is widely used in a variety of food products including fruit juices, bread, smoked fish, sweets, tomatoes, catsup, dairy, skim milk products, etc.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.
Indigo carmine may be used as a test material to investigate its interaction with the calf thymus DNA in physiological buffer (pH 7.4) with the use of ethidium bromide (EB) dye as a fluorescence probe by spectroscopic studies. It may be used as an analytical reagent for spectrophotometric determination of pantoprazole sodium sesquihydrate (PNT) in pure form and dosage forms using a bromide-bromide mixture. IC may also be used as an analytical reference standard for the quantification of the analyte in food products using microemulsion electrokinetic chromatography (MEEKC).
Bottomless glass bottle. Contents are inside inserted fused cone.

grade	analytical standard
Quality Level	100
assay	97.0% (HPLC)
form	neat
shelf life	limited shelf life, expiry date on the label
application(s)	HPLC: suitable, gas chromatography (GC): suitable
Featured Industry	Cleaning Products Cosmetics Food and Beverages Personal Care
format	neat
SMILES string	[Na+].[Na+].[O-]S(=O)(=O)c1ccc2NC(\C(=O)c2c1)=C3\Nc4ccc(cc4C3=O)S([O-])(=O)=O
InChI	1S/C16H10N2O8S2.2Na/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b14-13+;;
InChI key	KHLVKKOJDHCJMG-QDBORUFSSA-L

pictograms	GHS07
signalword	Warning
hcodes	H317
pcodes	P261 - P272 - P280 - P302 + P352 - P333 + P313 - P362 + P364
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1