Barium Sulphate Precipitated
name：Barium Sulphate Precipitated
Formula：BaSO4
M.W：233.39
CAS NO.：7727-43-7
Characters：colorless orthorhombic system crystal or white amorphous powder, relative density 4.50 (15), melting point 1580, almost insoluble in water, ethanol and acid, sulfuric acid, soluble in hot dry to caking, 600 use carbon reduction into barium sulphide.
Usage：used as raw material or filler for paints, inks, plastics, rubber and batteries;Surface coating agent for impression paper and copper sheet;Sizing agent for textile industry;As a clarifier in glass products, it can remove foam and add luster.It can be used as a protective wall for radiation protection, and also used in ceramics, enamel, spices and pigments, etc., as well as other barium salt materials.
Specification：

Name of index

index

firsts

paste

Barium sulfate（BaSo4),% ≥

98.0

98.0

Ph value

6.5-8.0

6.5-7.5

hydrotrope，% ≤

0.20

0.20

Acid soluble content，% ≤

0.60

0.60

Iron (in Fe)，% ≤

0.004

0.004

Sulfide (in S)，% ≤

0.003

0.003


moisture，% ≤

0.20


28.0


Fineness (hole diameter 43um sieve residue)，% ≤

0.10


0.10


size distribution:



<10um，% ≥

80.0


90.0


<5um，% ≥

60.0


70.0


<2um，% ≥

25.0


50.0


oil absorption，%

15-25



whiteness ≥

standard sample


standard sample