Product Name: COATING GRADE ZINC OXIDE
Molecular formula: ZnO
Molecular weight: 81.39
Physical and chemical property: White or a little yellow powder, density 5.606, fusion point: 1975℃.It is a kind of two characters oxide, dissolve in acid and alkaline solution, insoluble in water or ethanol. It is yellow color at the high temperature, resume being white after cooling.
Use:
It can be used for products such as top-grade paint, coating material and the coating intermediate etc.
Characteristic and function:
1. The particle size is small, specific surface is big. There is stronger adhesive force and hiding power, improving the efficiency of the coating greatly.
2. The specific gravity is small, not easily to form the precipitation in use or in the final product.
3. This product also has some functions to shield the ultraviolet ray. It can play the anti-aged function in the coating.
Charactristics Limited
Grade 1 Grade 2 Grade 3 Grade 4
Zinc oxide(counted by dried subtances )%≥ 99.7 99.5 99 98
Metal ( zn ) %≤ no no no no
Lead oxide( Pb ) %≤ 0.037 0.1 0.18 0.2
105℃ volatile substances %≤ 0.3 0.4 0.6 0.8
Grain size （um） 2–20 4－50 4－50 4－60
Absorption oil value g/100g %≤ 14 14 / /
Color（with standard sample） white white little yellow little yellow
Decoloration strength (with standard sample) 100 95 / /
