Index name

Index

Adsorbing force of methylthionine chloride ml

≥11

Adsorbing force of quinine sulfate mg/g

≥120

PH

4.5-7.5

Chloride ≤%

0.10

Sulfate ≤%

0.05

Zinc salts ≤%

0.005

Total Fe ≤%

0.02

Heavy metal ≤%

0.003

Soluble matter in acid ≤%

0.8

Residue ≤%

2.5

Sulfide

No color change

Cyanide

Neg

Uncharring matter

no over standard

Loss on dry ≤%

10