properties:
1. white powder or hexagonal crystal, odourlessness, relative density: 5.606g/cm3, stable nature under normal temperature.
2. insoluble in water and alcohol, soluble in acid, alkali and ammonium hydroxide.
3. Zinc oxide is a kind of white pigment, also called zinc white. When heated, it will turn to yellow, but after cooling down, it still turn back to white.
Used as white dyestuff and used in printing & dyeing , paper, match and medicine industry.
Used in rubber industry as vulcanization activator, reinforecement agent and coloring agent of natural rubber, synthetic rubber and latex.
Used in the processing of zinc chrome yellow, zinc acetate, zinc carbonate, zinc chloride, etc.
Used for making electron laser materials, flurescent powder, forage additives, catalysts, magnetic materials.
Zinc oxide Specification
Item | Index | ||||
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 |
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