Name

Grade

Whiteness(%±2)

325Mesh residue
(%≤)

Loss on ignition
(1000°)
(%≤)

Moisture
(%≤)

Volume density
(g/cm³)

Silicon dioxide(%≥)

Magnesium oxide
(%≥)

Iron(III) oxide
(%≤)

Calcium oxide
(%≤)

Aluminum oxide
(%≤)

loose

tight

Plastic level talcum powder

SL-special

90

0.5

7.0

0.5

0.4

0.8

61

31

0.3

0.3

0.5

SL-1

85

1.0

7.0

0.5

0.5

0.9

58

30

0.5

0.5

1.0

SL-2

80

1.0

10.0

0.5

0.55

0.95

55

28

1.5

1.0

4.0