锌的硫酸

zinc sulphate Characteristic: whiteor light-yellow crystals,astringent,easily to be efflorescent in dry air.Dissolvable in winter,little dissolvable in alcohol and glyceri. Main usage: mainly used in synthietic fiber industry,material of printingand dyeing,preservative.And be used in madical for fungicideandemetic,and can be used in electroplate,water purification. mainly used in feed additive and trace element fertilizer industry etc. Storyage: Dry and hermetic. Zinc Sulphate(ZnSO4.7H2O) a.Tech grade Specification: Zn: 21-22% Pb: 0.01-0.001% Cd: 0.002-0.003% As: 0.002-0.005% Fe: 0.001-0.005% Packing: In 50kgs net WPP/PE bags. b.Feed grade. Specification: Zn: 21-22% Pb: 0.001%max Cd: 0.002%max As: 0.0005%max Packing: In 50kgs net WPP/PE bags. c.Agricultural grade. Specification: Zn: 21-22% Free acid: 0.2%max Pb: 0.001%max Cd: 0.002%max As: 0.002%max Packing: In 50kgs net WPP/PE bags.