... Formula(NH4)2 SO4Free Acid0.2% maxHS Code31022100Grade Standardagriculture,steel gradePlace of originChina(mainland)ApplicationAgriculture,FertilizerBrand NameYuanchengAppearancewhite powder, color instability. ... chemical, leather, the raw material of ammonium persulfate,adjuvant, glufosinate ,herbicides,etc.PackingShipmentApplicationPlease feel free to us if you have any question. steel grade ...