Name

Grade

Whiteness(%±2)

325Mesh residue
(%≤)

Loss on ignition
(1000°)
(%≤)

Silicon dioxide(%≥)

Magnesium oxide
(%≥)

Iron(III) oxide
(%≤)

Calcium oxide
(%≤)

Aluminum oxide
(%≤)

K₂O+NA₂O(%≤)

CaO %≤

Ceramics grade talcum powder

TC-special

90

0.5

6.0

61

31

0.3

0.3

0.5

0.1

0.3

TC-1

85

1.0

7.0

58

30

0.4

0.4

1.0

0.3

0.4

TC-2

83

1.0

8.0

55

28

0.8

0.5

2.0

0.4

0.5

TC-3

80

1.0

10.0

50

28

1.5

1.0

4.0

0.4

1.0