... crystal Purity: N:21.0% CASNO:7783-202 Alias:ammonium sulfate, ammonium sulphate,sulfuric acid, Ammonium sulfateExellent quality with competitve priceMolecular formula:(NH4 ... 132.14 CASNO:7783-20-2 HS NO: 31022100Alias: ammonium sulfate, ammonium sulphate, sulfuric acid, diammonium salt, diammonium sulfateProperties: White ... ≤0.005----Insoluble substance in water %≤0.01---- Ammonium sulphate N:21.0%