22% zinc sulphate heptahydrate

Zinc sulphate heptahydrate CAS No.: 7446-20-0 UN No.:3077 HSNo.: 28332600 [Molecular formula]ZnSO4.7H2O [Properties]Zinc sulfate(ZnSO4.7H2O), also named white vitriol. It is an White flowing powder, deliquescence in the air, slightly soluble in water, slightly soluble in alcohol, insoluble in the acetone. [quality standard] Index name Index ZnSO4.7H2O zinc sulfate heptahydrate Excellent I-class qualified ( Zn )≥% 22.0 21.0 20.0 free acid( )≤% 0.1 0.2 0.3 ( Pb ) ≤% 0.002 0.005 0.01 ( Cd ) ≤% 0.002 0.002 0.003 ( As )≤% 0.002 0.005 0.007 [Application]Zinc sulfate is the raw material to make lithopone and zinc salt. It’s the mordant for printing and dyeing industry, preservative agent for wood and leather, pesticide for fruit trees, medical vomit, clarifier and preservative agent for bone adhesive, as well as important subsidiary material to make chemical fiber. In addition, it is also used as industrial bleacher in electroplating, electroanalysis and paper- making. [Storage]Dry place and sealed preservation [Packing]In woven bag lined with plastic 25kg/bag or 50kg/bag.