Barium sulfate precipitated

Item

Unit

Index

First Quality

Qualifier

1

Barium sulphate content

%

≥98

≥96

2

105 °C volatile matter

%

≤ 0.3

≤0.5

3

Water solubles content

%

≤0.3

≤0.5

4

Water content

%

≤0.15

≤0.15

5

pH-value of aqueous suspension

6.5-8.0

6.59.0

6

Oil absorption(depend on different fineness)

% g/100g

10-30

7

Fe content

%

≤0.004

8

Whiteness

%

92-96

90-94

9

specific weight

4.0-4.5

4.0-4.2

fineness: 325-mesh, 400-mesh, 600-mesh, 800-mesh, 1250-mesh, 2000-mesh, 3000-mesh, 6000-mesh
8000-mesh, 12500-mesh, 15000-mesh (Fineness can be custom-made upon client's request)