Sulfanilic acid
Analytical Reagent (ACS), certified
Lot A296.044949
CAS 121-57-3
Formula C6H7NO3S
Mw 173.19
Assay (NaOH 0.1M titration) 99.4%
Chloride 0.0008%
Density 1.512
Insoluble in sodium carbonate solution 0.005%
Melting point >300°C
Nitrite 0.25ppm
Off white crystalline powder
Residue after ignition 0.005%
Solubility 0.1 g/100 mL at 20°C, in water
Sulfate 0.004%
