We are suppling Ferrous Sulphate Hepta Fe: 19.7%, We only deal with dried & free flowing Ferrous Sulphate Hepta 98%, Fe: 19.7% Zinc Sulphate IUPAC nameZinc sulfateOther ... Fine white Free Flowing Powder.Snow white Color.GranularZn: 21% min. Pb/As/Cd: 10 ppm max,Size: 2-4 mm ... or 1-3 mmZn: 33.5% min,or 36% min (Bangladesh Standard) Pb/As/Cd: 10 ppm max, Size: 2-4mm, 1-3mmcontact Ferrous Sulphate