... Sulphate 21% Properties:white crystals. Soluble in water,insoluble in ethanol, acetone,1) high efficfertilizer, 2) Nitrogen: 21%min 3) high ... . Nitrogen %: 21%.Properties:white crystals. Soluble in water,insoluble in ethanol, acetone, chloroform. Decomposes at 280°C to yield.Application : Mainly ...