Zinc Sulphate, Heptahydrate Zn: 21%, 22% min, Zinc Sulphat Monohydrate Zn: 35%min, Zinc Sulphate Granular 2-4mm, Pb/As/Cd: 10pp Zinc Sulphate IUPAC nameZinc sulfateOther namesWhite vitriol ... a coagulant in the production of rayon. It is also a precursor to the pigment lithopone. Zinc sulfate is used to supply ... : 10 ppm max, Size: 2-4mm, 1-3mm chinese supplier of Zinc Sulphate