CAS No.：1314-13-2
EINECS：215-222-5
Molecular Formula：ZnO
Molecular Weight：81.39
Appearance：White or light yellow fine powder, odorless, tasteless, Yellow at high temperature and white after cooling, melting point of 1975℃ (3587F)
Solubility：It is a two-stage oxide, soluble in acid、concentrated hydroxid、 ammonia water and ammonium salt solutions, difficult to dissolve in water and ethanol。
Uses：
Used in the production of top-grade paint, coating and coating intermediates
Characteristic：
1. Small particle size, large specific surface area, strong adhesion and covering power, greatly improving the efficacy of coating;
2. Small proportion, not easy to precipitate in use or final products;
3. It also has the function of shielding ultraviolet ray, which can play the role of anti-aging in the coating.
Quality standard：
| Item | specification | ||
| Zinc oxide (as ZnO)%,≥ | 99.7 | 99.5 | 99.0 |
| Metals (as dry)%,≤ | NO | NO | NO |
| Lead oxide (as Pb)%,≤ | 0.037 | 0.14 | 0.15 |
| Residue on sieve (45um mesh) %，≤ | 0.1 | 0.15 | 0.20 |
| Water soluble matter %，≤ | 0.1 | 0.1 | 0.15 |
| Oil absorption，g/100g ,≤ | 14 | 14 | 14 |
| Volatile matter on 105oC%，≤ | 0.3 | 0.4 | 0.8 |
| Color (compared with the standard samples) | similar | slight yellow | slight yellow |
| Reducing power (compared with the standard samples) ，≥ | 100 | 95 | 90 |
Packing: 25kg/ bag, lined with polyethylene film bag, outer packing is covered with film woven bag.
Storage: Avoid damage, dampness, contamination and contact with acids.
