325mesh　

400mesh

650mesh     

800mesh

Specific Gravity

4.35~4.40

4.35~4.40

4.35~4.40

4.35~4.40

Particle Size(μm）  

D50 9.0±1

D97 ≤ 32

 D50 7.5±1

  D97 ≤ 28

D50 6.0±0.5

   D97 ≤17

D50 5.5±0.5

 D97 ≤15

 Whiteness（L Value)

94

94

95

95

Oil Absorption    

8.0±2.0

8.0±2.0

10.0±2.0

10.0±2.0

 Ph Value  

8.0±1.0

8.0±1.0

8.0±1.0

8.0±1.0

 Ba(+Sr)SO4

≥ 97

≥ 97

≥ 98

≥ 98

Fe2O3

≤0.02

≤0.02

≤0.02

≤0.02

Al2O3

≤0.0002

≤0.0002

≤0.0002

≤0.0002

CaO

≤0.5

≤0.5

≤0.5

≤0.5

Heavy Metal       

≤0.02

≤0.02

≤0.02

≤0.02

Water Soluble Salts

≤0.2

≤0.2

≤0.2

≤0.2

Loss on Ignition   

≤0.5

≤0.5

≤0.5

≤0.5

Moisture

≤0.2

≤0.2

≤0.2

≤0.2

Residue Greater than on 45μm

≤ 0.5

≤ 0.2

≤ 0.1

0