... is a by-product from chemical (cyanuric acid, capro, acrylonitrile, sodium cyanide, monosodium glutamate - MSG, methyl methacrylate - MMA, etc.) or ... processing it can be white granular or flake.2)Caprolactam Grade is colorless (achromatic) crystalline or yellowish crystals.[Specifications] Based ... , avoid insolation, sign with no moisture and no insolation industrial ammonium sulphate20.6%N 21%N