Acid Blue 74 is classified chemically as an indigoid color. It conforms to the formula: C₁₆H₁₀N₂O₈S₂ • ₂Na.

CAS Numbers:

860-22-0

EC/List Numbers:

212-728-8

Technical Names:

1H-Indole-5-Sulfonic Acid, 2-(1,3-Dihydro-3-Oxo-5-Sulfo-2H-Indol-2-ylidene)-2,3-Dihydro-3-Oxo-, Disodium Salt
2-(1,3-Dihydro-3-Oxo-5-Sulfo-2H-Indol-2-ylidene)-2,3-Dihydro-3-Oxo-1H-Indole-5-Sulfonic Acid, Disodium Salt
Acid Blue 74 (INCI)
Blue No. 2
CI 73015 (INCI)
Disodium 5,5'-(2-(1,3-Dihydro-3-Oxo-2H-Indazol-2-ylidene)-1,2-Dihydro-3H-Indol-3-one)Disulphonate
Indigo Carmine

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Acid Blue 74

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