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。
Used in the production of top-grade paint, coating and coating intermediates
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.
|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.