P-sulfanilic acid
Chemical common name: sulfanilic acid; 4-aminobenzenesulfonic acid
CAS number: 121-57-3
Molecular formula: C6H7NO3S
Molecular weight: 173.20
Melting point (℃): 280 (decomposition)
Relative density (water=1, 25℃): 1.49
Solubility: slightly soluble in cold water, soluble in hot water, insoluble in ethanol, ether, benzene, soluble in sodium hydroxide aqueous solution
Quality Index
Appearance: white to off-white powder
Water insoluble matter: ≤0.10%
Content (total amino value) ≥99.0%
Aniline content: ≤0.002%
Scope of application
Mainly used for sulfamate water reducer, etc.
Storage method
Stored in a cool, ventilated warehouse, away from fire and heat sources, and should be mixed with oxidants,
Store acids and alkalis separately, and avoid mixed storage.