... powder 4,Use for Agriculture Grade 1,Product name Zinc Sulphate Hepta2,Purity Zn 22% min3,Appearance white powder4 ... ,Use for Agriculture Grade Specifications Zinc Sulphate Hepta Zn 22% minPb 0.002% maxAs 0.002 ... Nitrate,MagnesiumChloride,Calcium Carbonate Light,Ferrous SulphateMono(Powder/Granular),Ferrous Carbonate,Corn Starch,Sorbitol,Sodium Thiosulphate,Sodium Benzoate ...