1>Specification of B301 and B311
Item | B301 | B311 |
Total Zinc Calculated use Zinc Sulfate and Barium Sulfate % | 99 min | 99 min |
ZNS % | 28 min | 30 min |
Zinc Oxide % | 0.6 max | 0.3 max |
Volatile at 105°C % | 0.3 max | 0.3 max |
Water soluble matter % | 0.4 max | 0.3 max |
Sieve Residue,63um | 0.1 max | 0.1 max |
Oil absorption,g/100g | 14 max | 12 max |
Color, compared with the standard sample | Close to | |
PH value of aqueous suspension | 6.0-8.0 | |
Tint reducing power | Not less than | |
Hiding power | Not less than of 5% the standard sample | |
Introduction: Lithopone, also known as Li Dong powder, is a kind of white crystalline powder.As for the mixture of zinc sulfide and barium sulfate, the more zinc sulfide is, the stronger the covering power and the higher the quality. Refractive index and opaque force all exceed Zinc Oxide and lead oxide, but less than titanium dioxide. It usually used for coloring paint, ink, rubber and so on.
