No

Test Item

Technical specification (%)

Analysis  Results

(%)

1

Purity

99.0

99.12

2

Chloride

0.01

0.001

3

Iron

0.001

0.0002

4

Water   insoluble substance

0.05

0.01

5

As

0.0002

0.0001

6

Heavy metal

0.001

0.0003

7

PH

5-8

6.5

8

Size

0.1-1

0.1-1

9

Look

White crystalline substance

White crystalline substance

10

First Quality