Zinc sulfate
　　   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:
　　2.1 Zinc sulfate Industry Grade
　　Quality standards：HG/T2326-2005

Index	Ⅰ			Ⅱ
Item	Superior product	First grade	Qualified product	Superior product	First grade	Qualified product
Zinc sulfate，wt%≥	98	97	95	99	97	92
Zinc（Zn），wt%≥	35.7	35.34	34.61	22.51	22.06	20.92
Insoluble Matters, wt%≤	0.02	0.05	0.1	0.02	0.05	0.1
PH value (50g/L)	4	4	-	3	3	-
Chloride (Cl), wt%≤	0.2	0.6	-	0.2	0.6	-
Cadmium（Cd）, wt%≤	0.002	0.007	0.01	0.001	0.01	-
Lead（ Pb ）,wt%≤	0.002	0.007	0.01	0.001	0.01	0.01
Manganese (Mn)，wt%≤	0.01	0.03	0.05	0.005	0.1	-
Iron（Fe）, wt%≤	0.008	0.02	0.06	0.003	0.02	0.06

　　2.2  Zinc sulfate Feed Grade
　　Quality standards：GB/T25865-2010

Item                      Index		Ⅰ	Ⅱ
ZnSO4.H2O , wt%≥		94.7.	-
ZnSO4.7H2O , wt%≥		-	97.3
ZnSO4.H2O (as Zn), wt%≥		34.5	-
ZnSO4.7H2O (as Zn), wt%≥		-	22.0
Lead（ Pb ）,wt%≤		0.001	0.001
Arsenic（As）, wt%≤		0.0005	0.0005
Cadmium（Cd）, wt%≤		0.001	0.001
Fineness	≤250um wt%≥	95	-
	≤800um, wt%≥	-	95

　　2.3  Zinc sulfate Food Grade
　　Quality standards：GB 25579-2010

Item                               Index	Ⅰ	Ⅱ
ZnSO4.H2O , wt%≥	99.0-100.5	-
ZnSO4.7H2O , wt%≥	-	99.0-108.7
Acidity	Complies with the test
Alkali metal and alkaline earth metals, wt%≤	0.5
Cadmium（Cd）, wt%≤	0.0002
Lead（Pb）,wt%≤	0.0004
Selenium（Se）,wt%≤	0.003
Arsenic（As）, wt%≤	0.0003

　　3. Packaging: Net 25kg in plastic lined woven bag, can also package according to customer request
　　4. Uses: Zinc sulfate in the chemical industry is one of the important raw materials used for producing other zinc salt, mainly used for fruit trees, fish pond in agricultural insecticidal, sterilization, etc. Widely used in feed industry, fertilizer industry, chemical industry, electroplating industry, mineral processing industry, pharmaceutical industry, veterinary industry and pesticide industry.
　　5. Storage: Stored in cool and ventilated, avoid light place.
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