Index name

Index

Adsorbing force of methylthionine chloride ml

≥12

PH ≤%

5-8

Chloride ≤%

0.20

Sulfate ≤%

0.20

Total Fe ≤%

0.10

Soluble matter in acid ≤%

3.5

Residue on ignition ≤%

4

Heavy metal ≤%

0.005

Loss on dry ≤%

10

Uncharring matter

no over standard