Description
Indigo carmine (Indigotine, 5,5′-indigodisulfonic acid sodium salt, Brilliant Indigo) is an indicator at pH 11.5-14, changing from blue to yellow. It has a role as a food colouring and a histological dye.
Product information
CAS Number: 860-22-0
Molecular Weight: 466.35
Formula: C16H8N2Na2O8S2
Synonym:
Indigotindisulfonate sodium
C.I.Acid Blue 74
Chemical Name: disodium 3-hydroxy-3'-oxo-1H,3'H-[2,2'-biindole]-5,5'-disulfonate
Smiles: [Na+].[Na+].[O-]S(=O)(=O)C1=CC2C(O)=C(NC=2C=C1)C1=NC2C=CC(=CC=2C1=O)S([O-])(=O)=O
InChiKey: JFVXEJADITYJHK-UHFFFAOYSA-L
InChi: 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;;/h1-6,17,19H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2
Technical Data
Appearance: Solid Power
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: Solubility (25°C). 93 mg/mL(199.42 mM).
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥12 months if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined
HS Tariff Code: 382200
References:
- K Takeuchi, et al. Quantitative Determination of Aqueous-Phase Ozone by Chemiluminescence Using indigo-5,5'-disulfonate. Anal Chem. 1989 Mar 15;61(6):619-23.
Products are for research use only. Not for human use.
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