lithopone

Lithopone is a white pigment, zinc sulfide and barium sulfate mixture.
Zinc and barium sulfide by the sulfate solution derived from the precipitation reaction, after filtration, drying and crushing, the re-calcined till the red-hot, pour into the water quenching derived. Hiding secondary to titanium dioxide. Is not acid.

Zinc barium white pigment widely used than the zinc sulfide. In structure and composition similar to zinc sulfide, barium sulfate containing composition, durability somewhat less. Less resistant powder resistance. Cheap and could therefore be a partial substitute for the use of titanium dioxide.

Performance
Zinc barium white pigment widely used than the zinc sulfide. In structure and composition similar to zinc sulfide, barium sulfate containing composition, durability somewhat less. Less resistant powder resistance. Cheap and could therefore be a partial substitute for the use of titanium dioxide.
Lithopone Performance
Performance lithopone
Refractive index of 2
Density of 4.2
Oil absorption 10-12
pH value of 8-9.5
Hiding Limited
Good chemical stability, in addition to pH <3 acid
UV Stability
Under UV irradiation, ZnS fade into gray. To avoid this problem, you can prepare lithopone nickel powder and iron powder are added in, first calcined cobalt and copper.
Uses
Can be applied to all the paint, coatings, thermoplastics, thermosetting plastics and paper.

white powder, mainly used in paper making, plastic, rubber, paint, daliy chemical products and printing ink.

lithopone

lithopone: the content or the model is calculate by zincsulfide which is 28% and over 30%