Molecular Formula:

ZnCO3•2Zn(OH)2•H2O

Molecular Weight:

324.15

H.S. Code:

2836.9990

Property:

White or yellowish fine amorphous powder, smell-less, tasteless. The proportion is 4.42-4.45, does not dissolve in water and alcohol, slightly soluble in ammonia, can dissolve in the diluted acid and the sodium hydroxide.

Usage:

Used as the light apocrustic and the latex products raw material. It can prepare calamine and sued as the skin protecting agent, also may use in the rayon, petroleum and the chemical fertilizer industries as the main material of the desulfurizer and the catalyst. On the rubber product, the paint, the medicine and other chemical products, it is also widely applied.

Quality Standard:

Conform to the chemical trade standard of the People's Republic of China HG/T2523-93.

Packing:

In polyethylene film bag with outer polypropylene woven bag, 25kg or as required by customers.

Items

Index

Best quality

First quality

Qualified

Main content(Zn dry basis) % ≥

57.5

57.0

56.5

Ignition loss %

25.0-28.0

25.0-30.0

25.0-32.0

Heavy metal(Pb) content % ≤

0.04

0.05

0.05

Moisture % ≤

2.5

3.5

5.0

Sulfate(SO4 ) % ≤

0.60

0.80

--

Fineness through the 75um mesh % ≥

95.0

94.0

93.0

Cadmium(Cd) % ≤

0.10

--

0.003