Zinc sulfate （Zinc fertilizer）
　　Zinc sulfate monohydrate (Ⅰ);
　　Zinc sulfate heptahydrate (Ⅱ)
　　Other name：Zinc vitriol, zinc vitriol
　　CAS No.: 7446-19-7(Ⅰ); 7446-20-0(Ⅱ)
　　EINECS No.:231-793-3
　　UN No.: 3077
　　HS No.: 2833293000
　　Molecular Formula: ZnSO4.H2O (Ⅰ); ZnSO4.7H2O (Ⅱ)
　　Molecular weight：179.47 (Ⅰ); 287.54 (Ⅱ)
　　1. Appearance: White or microstrip yellow powder (Ⅰ); Colorless or microstrip yellow crystal (Ⅱ)
　　2. Specifications:
　　Quality standards：HG 3277-2000

Index  Item	Ⅰ			Ⅱ
	Superior product	First grade	Qualified product	Superior product	First grade	Qualified product
Zinc（Zn），wt%≥	35.3	33.8	32.3	22.0	21.0	20.0
Acidity acid (as H2SO4) ,wt%≤	0.1	0.2	0.3	0.1	0.2	0.3
Cadmium（Cd）, wt%≤	0.002	0.003	0.005	0.002	0.002	0.003
Lead (Pb) , wt%≤	0.002	0.010	0.015	0.002	0.005	0.010
Arsenic(As) , wt%≤	0.002	0.005	0.010	0.002	0.005	0.007

　　3. Packaging: Net 25kg in plastic lined woven bag, can also package according to customer request
　　4. Uses: Used as trace element fertilizer in agriculture, can be used as basal, foliar fertilizer, etc.
　　5. Storage: Stored in cool and ventilated, avoid light place.
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