|
Item |
Index |
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|
|
Rubber type |
Coating type |
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|
|
Top-grade |
First grade |
Top-grade |
First grade |
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|
Appearance |
White powder |
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|
Zinc oxide(Zn0 calculating as dry material),W/% ≥ |
|
99.7 |
99.5 |
99.7 |
99.5 |
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|
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 |
- |
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|
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 |
|
_ |
_ |
_ |
_ |
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|
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 |
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|
Volatile matter in 105°C% W/%≤ |
|
0.3 |
0.4 |
0.3 |
0.4 |
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|
Specific surface area/(m2/g) |
agree |
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|
Oil absorption */g/100g |
agree |
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|
Color* (compared with standard sample) |
agree |
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|
Decoloration power*(compared with standard sample)≥ |
agree |
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