| Message: | CAS NO:121-57-3 sulfanilic acid
Basic Info
Sulfanilic acid
IUPAC name:p-aminobenzenesulphonic acid
CAS Registry Number:121-57-3
Chemical formula:C6H7NO3S
Molar mass:173.19
Density:1.485
Melting point: 288 °C (550 °F; 561 K)
Solubility in water:12.51 g/L
Acidity (pKa): 3.01
Type: Dyestuff Intermediates
Appearance: Powder
Colour: White
Quality: Refined
Export Markets: South America, Southeast Asia
Product Detail
Product name: Sulfanilic acid
Specification: Appearance: White crystal powder
Free aniline: 0.02% max
Water insolbule matter: 0.1% max
Moisture: 0.5% max
Packing: In 25kgs, 350/500/750kgs jumbo bag
Introduction
Sulfanilic acid (4-aminobenzenesulfonic acid ) is an off-white crystalline solid which finds application in quantitative analysis of nitrate and nitrite ions. The solid acid exists as a zwitterion, and has an unusually high melting point.
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