Zinc carbonate is a white crystals or fine powder; insoluble in water, alcohol, and acetone, slightly soluble in ammonia. soluble in alkalies and acids. It is used in the industry of:
Oil Drilling
rubber industry
fire-proofing
animal feeds
manufacturing of zinc salts
ceramics
pigments
cosmetics and ointments
Physicalstate : white fine powder
Index:
fire-proofing
animal feeds
manufacturing of zinc salts
ceramics
pigments
cosmetics and ointments
Physicalstate : white fine powder
Index:
|
Items
|
Index (%)
|
||
|
Ⅰ
|
Ⅱ
|
Ⅲ
|
|
|
Zn content ≥
|
57.5
|
57
|
56.5
|
|
Loss on ignition
|
25.0—28.0
|
25.0--30.0
|
25.0--32.0
|
|
Heavy metal content (Pb) ≤
|
0.0005
|
0.001
|
0.005
|
|
Moisture ≤
|
2.5
|
3.5
|
5
|
|
SO42- ≤
|
0.4
|
0.8
|
--
|
|
Sieve Residue (75microns mesh): ≥
|
95
|
94
|
93
|
|
Cd ≤
|
0.0004
|
0.001
|
0.005
|