C.I. Acid Black 1, acid
2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-((4-nitrophenyl)azo)-6-(phenylazo)-
Zwitterionic surfactants-Amino sulfonic acid
Molecular Formula & Molecular Weight
Molecular Formula: C22H16N6S2O9
Molecular Weight: 572.53
Solubility: slightly soluble in water.
Risk: irritation, irritation to skin, eye.
Ecology: may be hazardous to environment. Water body should be given special attention.
Characteristics: excellent masking, dispersing abilities.
Quality standards & test methods
physical and chemical indexes
actives*, %, ≥
*: should be marked on molecular weight.
Use as dye.