Basic information
CAS NO
860-22-0
EINECS
212-728-8
Molecular Formula
C16H8N2Na2O8S2
Molecular Weight
466.3529
English Name
Indigo Carmine
Synonyms
C.I. 75781, C.I. Acid Blue 74, C.I. Food Blue 1, C.I. Food Blue 1, disodium salt, C.I. Natural Blue 2, Indigotindisulfonate Sodium [USAN], 5,5-Indigodisulfonic acid, disodium salt, Acid Blue 74, disodium 5,5-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate, disodium 5,5-indigodisulphonate, E 132, Indigo-5,5-disulphonic acid disodium salt, 1H-indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt, (2E)-, disodium (2E)-3,3'-dioxo-1,1',3,3'-tetrahydro-2,2'-biindole-5,5'-disulfonate
Physical and Chemical Properties
Water Solubility
1 g/100 mL (25℃)
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