Appearance

Yellow

Red

Green

Black

Brown

Relative coloring powder %

98 min

98 min

98 min

98 min

98 min

Volatile matter %( at 105C)

2.5 max

2.5 max

2.5 max

2.5 max

2.5 max

Water soluble matter %

0.2 max

0.2 max

0.2 max

0.2 max

0.2 max

Residue on 45μm mesh %

0.05 max

0.05 max

0.05 max

0.05 max

0.05 max

PH of water suspension

7~9

7~9

7~9

7~9

7~9

Oil absorption g/100g

30~35

30~35

30~40

25~30

30~35

Total iron-oxide %

82 min

90 min

82 min

93 min

90 min

Soluble antimony mg/kg

5 max

Soluble arsenic

5 max

Soluble barium

20 max

Soluble cadmium

5 max

Soluble chromium

5 max

Soluble lead

5 max

Soluble mercury

5 max

Soluble selenium

5 max