CAS Registry Number

CAS 118-33-2 — 2-Naphthylamine-5,7-disulfonic acid

2-Naphthylamine-5,7-disulfonic acid is an aromatic sulfonic acid derivative primarily used as a key intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals, particularly in the production of azo dyes and pigments. It appears as a white to pale yellow crystalline powder with high solubility in water. This chemical has a CAS number of 118-33-2, a molecular formula of C10H9NO6S2, and a molecular weight of 303.3116 g/mol. It is stable at ambient storage conditions and carries no signal word under standard hazard classifications. Molekula supplies 2-Naphthylamine-5,7-disulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.