Bisphenyl Aminosulfophenylester

Bisphenyl Aminosulfophenylester (CAS No. 68015-60-1) is a high-performance dye intermediate with the molecular formula C₂₇H₂₆N₂O₆S₂ and a molar mass of 538.64 g/mol. It appears as an off-white powder and is primarily used in the synthesis of reactive dyes and specialty colorants. Structurally, it features bisphenol A linked to two aminobenzenesulfonyl groups, offering excellent solubility, thermal stability, and reactivity in diazotization and coupling reactions. Its sulfonic acid groups enhance water solubility and dye fixation on textile substrates, making it ideal for cotton and blended fabrics. The compound is manufactured under strict quality controls, with specifications including ≥89% purity, ≤1000 ppm iron content, and ≤8% moisture2. It is widely adopted in Indian dye manufacturing due to its consistent performance, compatibility with modern dyeing processes, and compliance with environmental standards. Bisphenyl Aminosulfophenylester supports vibrant color development and durability in textile and pigment applications.