Lithopone - 99% Min Zinc Sulfide & Barium Sulfate, Excellent Hiding Power & Tint Reducing Capability

We are a reputed name in this industry as a Exporter, Supplier & Trading Company of Lithopone in Xian, Shaanxi, China.
CAS Number: 1345-05-7

Lithopone is a brilliant white pigment used in paints, inks, leather, paper. Lithopone is an insoluble mixture of barium sulfate and zinc sulfide that precipitates upon mixing solutions of barium sulfide and zinc sulfate. The precipitate is recovered by filtration, then calcined (roasted) at temperatures above 600A C (1,112A F). Although lithopone has been replaced in many applications by titanium dioxide, introducedafter World War I, it is still widely used in a number of products, such as water paints.

PROPERTIES
Mean Values. These Do Not Represent A Specification

ITEM INDEX
B-301B-311B-312
The sum of Zinc Sulfide and Barium Sulfate99% Min99% Min99% Min
Total content of Zinc Calculated as Zinc Sulfide28%Min30%Min30%Min
Zinc Oxide 0.6% Max0.3% Max0.3% Max
Volatie matter at 105 a 0.3% Max0.3% Max0.3% Max
Water Soulble Substances 0.4% Max0.4% Max0.4% Max
Residue on sieve (63um mesh)0.1% Max0.1% Max0.1% Max
Color( Compared with standard sample)Close toClose toHigh
PH of aqueous suspension6.5-8.06.5-8.06.5-8.0
Oil absorption12.8Max10-1410-14
Tint reducing power100Min105Min105Min
Hiding power95%Min95%Min95%Min

*B312 through the surface treatment of organic materialsi more applicable to paint.