Item

Rubber Class

Paint Class

ZnO-X1

ZnO-X2

ZnO-T1

ZnO-T2

Zinc oxide content (dry) % not less than

99.5

99.0

99.5

99.0

Lead oxide % not less than

0.12

0.20

-

-

Cadmium oxide % not less than

0.02

0.05

-

-

Copper oxide % not less than

0.006

-

-

-

Manganese % not less than

0.0002

-

-

-

Metal zinc % not less than

non

non

non

-

Insoluble matter in hydrochloric acid % not less than

0.02

0.03

-

-

Loss on ignition % not less than

0.4

0.6

-

-

Water solubility % not less than

0.4

0.7

0.4

0.7

Moisture % not less than

0.4

0.4

0.4

0.4

Covering power g/m² not less than

-

-

150

150

Oil absorption % not less than

-

-

18

20

Achromatic power % not less than

-

-

100

95