English name:Zinc oxide
Molecular formula:ZnO
Molecular weight:81.39
Physical and chemical properties: white hexagonal system crystal or powder. Relative density is 5.606, refractive index is 2.008-2.029, melting point is 1975°C. It dissolves in acid, sodium hydroxide and ammonia chloride
Use:used as white paints and used in printing and dyeing, papermaking, match and medicine industry. It is used as natural rubber, sulfuration active agent of synthesis rubber latex, reinforcing agent and coloring agent in rubber industry. In addition, it is still used in electronic laser material, fluorescent powder, activator, etc.
Technical index:
Item |
Index |
|||||
Excellent grade product |
Special grade product |
Special grade product |
Excellent grade product |
First grade product |
Qualified product |
|
Zinc oxide(dry products),%≥ |
99.70 |
99.96 |
99.83 |
99.75 |
99.50 |
99 |
Metal( Zn ),% ≤ |
no |
no |
no |
no |
no |
0.008 |
Lead oxide( Pb ),% ≤ |
0.037 |
0.0016 |
0.0031 |
0.0031 |
0.05 |
0.07 |
Oxides of manganese(Mn),% ≤ |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
Copper oxide (Cu) , % ≤ |
0.0002 |
0.0002 |
0.0002 |
0.0002 |
0.0004 |
0.0004 |
Hydrochloric acid undissolved substance,% ≤ |
0.006 |
0.0002 |
0.001 |
0.001 |
0.008 |
0.009 |
Burning loss,% ≤ |
0.20 |
0.010 |
0.10 |
0.12 |
0.20 |
0.20 |
Residue on sieve(45um mesh),% ≤ |
0.10 |
0.01 |
0.02 |
0.05 |
0.15 |
0.20 |
Water soluble matter,% ≤ |
0.10 |
0.001 |
0.04 |
0.06 |
0.10 |
0.15 |
105 °C volatile,% ≤ |
0.30 |
0.06 |
0.12 |
0.15 |
0.40 |
0.50 |
Oil absorption,g/100g≤ |
- |
14 |
- |
- |
14 |
14 |
Color(compared with standard sample) |
- |
similar |
- |
- |
little |
less |
Reducing power(compared with standard sample),% ≥ |
- |
100 |
- |
- |
95 |
90 |
Packing and storage:
Packing: Zinc oxide is packed in inner liner plastic film plastic weaving bag or waterproof bag and 25 kg for every bag.
Storage:Valid period for zinc oxide is 6 months since production date started and no unsoldering. It can be continued to use if achieving standard after getting standard testing when expiring.