2-Aminophenol-4-sulfonic acid/3-Amino-4-hydroxybenzenesulfonic acid

English Name: 2-aminophenol-4-sulfonic acid; 3-Amino-4-hydroxybenzenesulfonic acid

Other names: 3-amino-4-hydroxybenzene sulfonic acid; 2-amino-1-phenol-4-sulfonic acid; O-aminophenol sulfonic acid; 2-aminophenol-4-sulfonic acid; 3-amino-4-phenol sulfonic acid; 2-aminophenol sulfonic acid; O-aminophenol sulfonic acid; 2-amino-1-phenyl-4-sulfonic acid

CAS No.: 98-37-3 c6h7no4s=189.19

Grade: br

Content: ≥ 98.0% (neutralization titration)

Moisture: ≤ 9.0%

Burning residue: ≤ 2.0%

Physicochemical properties: colorless prismatic crystal, soluble in hot water, very soluble in lye, with a solubility of about 1% in cold water. With ferric chloride, it turns cherry red and then brown. Melting point 300 ℃

Purpose: biochemical research. Dye intermediates, used in the production of acid mordant orange LR, acid mordant violet, reactive violet k-3r, direct sun resistant Brown BRL, etc

Save: RT