... timely delivery. Welcome to inquiry. SpecificationsAmmonium Sulphate 21% Properties:white crystals. Soluble in water,insoluble in ethanol, acetone,1) ... : (NH4)2SO4. Molecular weight: 132.14. Nitrogen %: 21%.Properties:white crystals. Soluble in water,insoluble in ethanol, acetone, chloroform. Decomposes ... 21%Moisture(H2O)0.5%max 0.2%Appearanceoff white crystaloff white crystal n21% ammonium sulfate