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Zinc Sulfate(mono, Hepta)
CAS No.:7733-02-0 (Anhydrous) 7446-20-0 (heptahydrate)
Synonyms: Sulfuric acid, zinc salt (1:1) heptahydrate; Zinc vitriol, heptahydrate; Zinc sulfate, heptahydrate
Melting Point: 100ºC
Boiling point: 500ºC
Density: 1.957
Description:. Powder and Granular
Specification:
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Item
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Index
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I
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II
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Superior Grade
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First-class
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Qualified
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Superior Grade
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First-class
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Qualified
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Main
Content
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(as Zn)
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35.70
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35.34
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34.61
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22.51
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22.06
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20.92
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(as ZnSO4  H2O)
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98.0
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97.0
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95.0
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-
|
-
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-
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(as ZnSO4 7H2O)
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-
|
-
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-
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99.0
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97.0
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92.0
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The content of insoluble
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0.020
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0.050
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0.10
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0.020
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0.050
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0.10
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PH value ( 50g /l soluble)
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4.0
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4.0
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-
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3.0
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3.0
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-
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The content chloride(based on Cl)
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0.20
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0.60
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-
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0.20
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0.60
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-
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Pb content
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0.002
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0.007
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0.010
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0.002
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0.010
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0.010
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Fe content
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0.008
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0.020
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0.060
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0.005
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0.020
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0.060
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Mn content
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0.01
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0.03
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0.05
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0.05
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0.10
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-
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Cd content
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0.002
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0.007
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0.010
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0.002
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0.010
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-
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Cu content
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0.001
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?
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?
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?
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?
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?
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Uses: Mainly used as raw material for production of lithopone
Packing : 25kg PP woven bag
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