... .1M solution is 5.5, Density is 1.769 g/cm3 (20 °C), hygroscopic, soluble in water insoluble ... acetone, alcohol and ether.[Appearance]1)Steel Grade (also call Coke-ovens Grade) is fine white powder, after processing ... it can be white granular or flake.2)Caprolactam Grade is colorless (achromatic) crystalline or yellowish crystals.[Specifications] ... insolation ammonium sulphate 20.6 granular steel grade