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Lithopone

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  Post Date: Aug 07,2017
  Expiry Date: Aug 07,2018
  Detailed Description: Cas No. :1345-05-7 Introduction
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 600° C (1,112° 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-301 B-311 B-312
The sum of Zinc Sulfide and Barium Sulfate 99% Min 99% Min 99% Min
Total content of Zinc Calculated as Zinc Sulfide 28%Min 30%Min 30%Min
Zinc Oxide 0.6% Max 0.3% Max 0.3% Max
Volatie matter at 105 ℃ 0.3% Max 0.3% Max 0.3% Max
Water Soulble Substances 0.4% Max 0.4% Max 0.4% Max
Residue on sieve (63um mesh) 0.1% Max 0.1% Max 0.1% Max
Color( Compared with standard sample) Close to Close to High
PH of aqueous suspension 6.5-8.0 6.5-8.0 6.5-8.0
Oil absorption 12.8Max 10-14 10-14
Tint reducing power 100Min 105Min 105Min
Hiding power 95%Min 95%Min 95%Min

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

  CAS Registry Number:

1345-05-7
  Synonyms: ;77115;C.I. Pigment White 5;C.I. 77115;Pigment White 5;Barium zinc sulfate;Barium zinc sulfide;
  Molecular Formula: Zn2BaS2O5
  Molecular Weight: 412.207
  Molecular Structure: 1345-05-7 lithopone

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  Contact: Gina Li
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