... as NPK 21-0-0 24S. Generally, it is a by-product from chemical (cyanuric acid, capro, acrylonitrile, ... in acetone, alcohol and ether.[Appearance]1)Steel Grade (also call Coke-ovens Grade) is fine white powder, after processing it ... release, quick acting fertilizer, can be directly used for a variety of soil and crops, can be used as ... and no insolation ammonium sulphate 20.6 granular steel grade