Item |
Index |
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|
Rubber type |
Coating type |
|||||||
|
Top-grade |
First grade |
Top-grade |
First grade |
|||||
Appearance |
White powder |
||||||||
Zinc oxide(Zn0 calculating as dry material),W/% ≥ |
|
99.7 |
99.5 |
99.7 |
99.5 |
||||
Metal content(as Zn),W/% ≤ |
|
NO |
NO |
NO |
0.008 |
||||
Lead oxide(as Pb),W/% ≤ |
|
0.008 |
0.05 |
0.010 |
- |
||||
Manganese's oxide(as Mn ),W/%≤ |
|
0.0001 |
0.0001 |
0.0001 |
- |
||||
Cupric oxide(as Cu ),W/% ≤ |
|
0.0002 |
0.0002 |
0.0002 |
- |
||||
Cd,W/% ≤ |
|
0.002 |
0.005 |
0.010 |
_ |
||||
Fe,W/% ≤ |
|
0.005 |
0.010 |
0.010 |
_ |
||||
As,W/% ≤ |
|
_ |
_ |
_ |
_ |
||||
Alkalinity,ml ≤ |
|
_ |
_ |
_ |
_ |
||||
Insoluble matter in Hydroelectric acid,W/% ≤ |
|
0.006 |
0.008 |
0.008 |
- |
||||
Loss on ignition W/% ≤ |
|
0.2 |
0.2 |
0.2 |
- |
||||
Carbonate |
|
_ |
_ |
_ |
_ |
||||
Residue on 45um sieve W/% ≤ |
|
0.1 |
0.15 |
0.1 |
0.15 |
||||
Water-soluble matter W/% ≤ |
|
0.1 |
0.1 |
0.1 |
0.1 |
||||
Volatile matter in 105°C% W/%≤ |
|
0.3 |
0.4 |
0.3 |
0.4 |
||||
Specific surface area/(m2/g) |
agree |
||||||||
Oil absorption */g/100g |
agree |
||||||||
Color* (compared with standard sample) |
agree |
||||||||
Decoloration power*(compared with standard sample)≥ |
agree |