... and light grey,color instablity Ammonium sulphate (Ammonium sulfate) detail description: ItemStandardItemStandardNitrogen Content20 ... 2% maxHS Code31022100Grade Standardagriculture,steel gradePlace of originChina(mainland)ApplicationAgriculture,FertilizerBrand NameYuanchengAppearancewhite powder, ... , chemical, leather, the raw material of ammonium persulfate,adjuvant, glufosinate ,herbicides,etc. ...