... sulfate:N 20.5%MIN WATER 1%MAX 2,Appearance:white or light grey granule/powder 3,Usage: for agriculture use Ammonium Sulfate ... Colorless crystalline or white particlesStandard : GB535-1995usage Ammonium sulfate is mainly used as fertilizer, applicable to all kinds ... , leather, medicine, etc.Specificationnitrogen 21%minmoisture 0.5%maxappearance : white crystal powderWhite powder or tiny crystalls ...