Use:mainly used for the manufacturing of high requirement of rubber products or rubber chemicals.
Features:Small single particle size, larger than surface area, strong dispersion capacity, with strong activity .
Item | Indicator | |||
Model | Grade A | Grade B | Grade C | Grade D |
Zinc oxide (ZnO) %≥ | 98 | 97 | 96 | 95 |
Moisture %≤ | 0.7 | 0.7 | 0.7 | 0.7 |
Water soluble %≤ | 0.5 | 0.6 | 0.7 | 0.8 |
Loss on ignition %≤ | 1–3 | 1–4 | 1–4 | 1–4 |
Hydrochloric acid insuluble substance %≤ | 0.02 | 0.03 | 0.05 | 0.05 |
Lead oxide(Pb) %≤ | 0.01 | 0.01 | 0.05 | 0.05 |
Manganese oxide(Mn) %≤ | 0.001 | 0.001 | 0.002 | 0.002 |
Copper oxide(Cu) %≤ | 0.001 | 0.001 | 0.002 | 0.002 |
Fineness(45um Sieve residue ) %≤ | 0.1 | 0.2 | 0.3 | 0.4 |
Specific surface ㎡/g %≤ | 45 | 45 | 35 | 35 |
Accumulated density: g/m %≥ | 0.35 | 0.35 | 0.4 | 0.4 |