序号

检验项目

化学纯

工业级

1

外观

黄色固体

沙状橙色晶体

棕色液体

2

含量

FeCl₃.6H₂O

≧98%

≧96%

FeCl₃

≧57.6%

42%

3

水中不溶物

≤0.05%

≤0.05%%

≤0.07%

4

游离酸(HCl)

≤0.1%

≤0.15%

≤0.1%

5

硫酸盐(SO₄)

≤0.03%

≤0.02%

≤0.07%

6

硝酸盐(NO₃)

≤0.03%

≤0.02%

≤0.07%

7

磷酸盐(PO₄)

≤0.03%

≤0.03%

≤0.02%

8

锰

≤0.02%

≤0.02%

≤0.02%

9

锌

≤0.01%

≤0.005%

≤0.03%

10

亚铁

0.005%

≤0.01%

≤0.03%

11

铜

≤0.01%

≤0.01%

≤0.04%

12

砷

≤0.01%

≤0.002%

≤0.01%

13

氨水不沉淀物 NH₃

≤0.5%

≤0.1%

≤0.1%