can't read?
Zinc sulfate is the inorganic compound with the formula ZnSO4 as well as any of three hydrates. It was historically known as "white vitriol". All of the various forms are colourless solids. The heptahydrate is commonly encountered
Z 1317 Zinc sulphate, GR 99%+ Cas 7446-20-0 - used in protein precipitation, various manufacturing processes, and has been used to induce metallothienin expression in mice.