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Alkaline zinc carbonate (zinc carbonate)
浏览次数:2462    发布日期:2008-10-11 9:34:11
 

    Alkaline zinc carbonate (zinc carbonate) is widely used in the industries of rubber, plastics, chemicals and medicine as foaming agents of rubber and plastics, colorants, sulfurizing agent and optic stabilizer of transparent rubber and plastic products.
Quality Standard of Alkaline Zinc Carbonate (Zinc Carbonate): HG/T2523-93

Items
Indicators
Excellent product
First-class product
Conforming product
Main content (ZnO dry basis)% ≥
57.5
57.0
56.5
Moisture ≤
2.5
3.5
5.0
Heavy metal (Pb) content % ≤
0.04
0.05
0.05
Cadmium (Cd) ≤
0.10
Fineness (residue on 75µm  test sieve)  ≥
95.0
94.0
93.0
Ignition loss %  ≤
25.0~28.0
25.0~30.0
25.0~32.0

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