Sulfanilic acid is a synthetic organic chemical produced from the direct sulfonation of aniline and sulfuric acid. Sulfanilic acid is used as a raw material in the production of optical brighteners, food colors, specialty dyes, and concrete additives. It is white or yellowish crystal. Crystal water will be lost when the temperature has reached 100°C. Density:1.485 (25°C/4°C),slightly soluble in cold water,ethanol and aether, soluble in boiling water,melting point: 288°C,decompose at 300°C.
Synonyms: 4-aminobenzenesulfonic acid; p-anilinesulfonic acid
Molecular formula: C6H7NO3S
Molecular weight: 173.19
CAS No.: 121-57-3
Appearance: White or yellowish crystal
Content of sulfanilic acid %: 98 min.
Content of benzene and ammonia%: 0.05 max.
Insoluble substance in water%: 0.1 max.
Water content %: 0.5 max.
Packing: 25kg woven bag with plastic liner