1

Appearance

white powder or granules

2

Purity(FeCl2·2H2O)

≥99.0%

3

Water insolubles:  

≤0.012%

4

sulphates (SO42-)

≤0.004%

5

Iron of high valence (Fe3+)

≤0.01%

6

Copper (Cu)

≤0.01%

7

Alkaline-earth metal

≤0.1%

8

As:

≤0.001%

9

Zn:

≤0.005%

10

Mn:

≤0.07%

11

Pb:

≤0.005%