|
SN
|
items
|
Unit
|
Indicators
|
|
1
|
ZnO
|
％
|
≥99.5
|
|
2
|
PbO
|
％
|
≤0.12
|
|
3
|
CdO
|
％
|
≤0.02
|
|
4
|
CuO
|
％
|
≤0.006
|
|
5
|
Mn
|
%
|
≤0.0002
|
|
6
|
Zinc
|
|
None
|
|
7
|
HCL Insoluble Matter
|
%
|
≤0.03
|
|
8
|
Heat loss
|
％
|
≤0.4
|
|
9
|
Water soluble Matter
|
％
|
≤0.4
|
|
10
|
Sieve residue(45um mesh)
|
％
|
≤0.28
|
|
11
|
105°C volatile matter
|
%
|
≤0.4
|
Appearance: white powder, innocuous, odorless, stable under normal temperature. Is soluble in acid, alkali and ammonium chloride solution, insoluble in water and alcohol
Rubber and tire industry is the largest user of zinc oxide, in the course of rubber vulcanization process, to increase rubber physics performance.