1.Property:
White powder, odourless, relative density 5.606, stable under normal temperature. Insoluble in water and alcohol, soluble in acid, alkaki and amkonium solution.
2. Zinc Oxide Grades :Indirect process Zinc Oxide, Direct Process Zinc Oxide, etc.
Direct process zinc oxide quality meet standard of GB/T3494-1996
|
Item/Parameter
|
Standard
|
|
Zinc Oxide (in accordance with dry materials) % ≥
|
ZnO 99.5%
|
ZnO 99%
|
ZnO 98%
|
ZnO 95%
|
ZnO 90%
|
|
Lead oxide (PbO)% ≤
|
0.12
|
0.2
|
1.0
|
3.0
|
4.0
|
|
Cadmium oxide (CdO) % ≤
|
0.02
|
0.05
|
--
|
--
|
--
|
|
Cupric oxide (CuO) % ≤
|
0.006
|
--
|
--
|
--
|
--
|
|
Manganese (Mn) % ≤
|
0.0002
|
--
|
--
|
--
|
--
|
|
Metallic Zinc (in accordance with Zn) %
|
None
|
None
|
--
|
--
|
--
|
|
Muriatic Acid Insoluble Substance % ≤
|
0.03
|
0.04
|
0.5
|
0.7
|
2.0
|
|
Loss On Ignition % ≤
|
0.4
|
0.6
|
0.7
|
1.0
|
5.0
|
|
Water Soluble Substance % ≤
|
0.4
|
0.6
|
0.7
|
1.0
|
3.0
|
|
Sieve Residue (45um mesh ) % ≤
|
0.28
|
0.32
|
0.5
|
0.5
|
0.5
|
|
Volatile % ≤
|
0.4
|
0.4
|
0.5
|
0.5
|
0.5
|
Usage: Used in rubber, dope cable, porcelain enamel, oil, pottery and porcelain, glass and other chemical industry.
Packing: In polyethylene film bag with outer polypropylene woven bag, 25kg, 50kg, big sack bag or as required by the customer
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