Thermo Scientific Chemicals Indigo carmine

Useful in the staining of Negri bodiesIndigo carmine is used as a food colorant, pH indicator and dissolved ozone indicator. It is used to detect amino fluid leaks, highlight portions of the urinary tract, tissue stains and tool for the determination of hypochlorite. As a dye in renal function, it is used in testing and detection of nitrates and chlorates, and in the testing of milk.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Useful in the staining of Negri bodiesIndigo carmine is used as a food colorant, pH indicator and dissolved ozone indicator. It is used to detect amino fluid leaks, highlight portions of the urinary tract, tissue stains and tool for the determination of hypochlorite. As a dye in renal function, it is used in testing and detection of nitrates and chlorates, and in the testing of milk.

Solubility
Soluble in ethylene glycol monomethyl ether and ethanol. Slightly soluble in water and alcohol. Insoluble in benzene, chloroform and organic solvents.

Notes
Light sensitive. Incompatible with strong oxidizing agents.

Chemical Identifiers

CAS

860-22-0

Molecular Formula

C16H8N2Na2O8S2

Molecular Weight (g/mol)

466.35

MDL Number

MFCD00005723

InChI Key

KHLVKKOJDHCJMG-QDBORUFSSA-L

Synonym

indigo carmine, indigocarmine, acid blue 74, indigocarmin, indigotindisulfonate sodium, c.i. acid blue 74, food blue no. 2, amacid brilliant blue, c.i. food blue 1, fd&c blue no. 2

PubChem CID

5284351

SMILES

[Na+].[Na+].[O-]S(=O)(=O)C1=CC=C2N\C(C(=O)C2=C1)=C1\NC2=CC=C(C=C2C1=O)S([O-])(=O)=O

Melting Point

>300°C

Odor

Odorless

Quantity

25 g

Beilstein

4103904

Sensitivity

Light sensitive

Merck Index

14,4944

Solubility Information

Soluble in ethylene glycol monomethyl ether and ethanol. Slightly soluble in water and alcohol. Insoluble in benzene,chloroform and organic solvents.

IUPAC Name

disodium;(2E)-3-oxo-2-(3-oxo-5-sulfonato-1H-indol-2-ylidene)-1H-indole-5-sulfonate

Formula Weight

466.36

Chemical Name or Material

Indigo carmine

Hazard Category

H302

Hazard Statement

GHS H Statement
H302
Harmful if swallowed.

Precautionary Statement

P264b-P270-P301+P312-P330-P501c

EINECSNumber

212-728-8

RTECSNumber

DU3000000

TSCA

Yes

Recommended Storage

Ambient temperatures

SDS

Hazard Category

H302

Hazard Statement

GHS H Statement
H302
Harmful if swallowed.

Precautionary Statement

P264b-P270-P301+P312-P330-P501c

EINECSNumber

212-728-8

RTECSNumber

DU3000000

TSCA

Yes

Recommended Storage

Ambient temperatures

SDS

RUO – Research Use Only