Molecular Formula£ºZnCO3¡¤2Zn(OH)2¡¤H2O
Molecular Weight£º342.15
Property: white fine amorphism powder. Odorless and tasteless.
Specific gravity£º4.42-4.45. Not dissolve in water and alcohol.
Slightly soluble in ammonia. Dissolve in diluted acid and sodium
oxide.
Purpose: Can be used as light convergence and material for latex
products, skin protecting anent; used in making calamine, rayon,
oil, desulphurizer in fertilizer line and catalysts; Also widely
used in rubber products, paint, medicine and other chemical
products.
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| Item |
Index |
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top
grade |
first
grade |
qualified |
|
Zn content (dry basis), %, ¡İ |
57.5 |
57 |
56.5 |
|
fire, %, |
25.0-28.0 |
25.0-30.0 |
25.0-32.0 |
| Pb
content % ¡Ü |
0.04 |
0.05 |
0.05 |
|
water % ¡Ü |
2.5 |
3.5 |
5.0 |
| SO4
content %¡Ü |
0.60 |
0.80 |
|
|
fineness (75¦Ìm siege) % ¡İ |
95.0 |
94.0 |
93.0 |
| Cd
content % ¡Ü |
0.10 |
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Packaging: PE film bag
(internal) and plastic woven bag (external), 25 Kg per bag.
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