No

Test Item

Technical specification(%)

Analysis Results(%)

1

Purity(%)

≥99.5

99.68

2

Sulphate(%)

≤0.05

0.018

3

Iron(%)

≤0.0025

0.0002

4

Water  insoluble

substance(%)

≤0.02

0.004

5

Loss on drying(%)

≤0.1

0.04

6

Chloride(%)

0.01

0.002

7

Pb(%)

0.001

0.0002

8

Heavy metal(%)

0.001

0.0002

9

Mesh

20-100mesh

20-100mesh

10

Look

White crystalline substance

White crystalline substance

Conclusion

First Quality