检验项目

分析纯
HG/T3474-2000

二级品
(粉状)

一级品
(块状、片状)

特级品※
(块状、片状)

1

含量

FeCl₃·6H₂O %

≥99.0

≥98

≥99.5

≥99.5

2

水不溶物 Insolubles in water %

≤0.01

≤0.01

≤0.01

≤0.01

3

游离酸(以HCL计) %

≤0.1

≤0.1

≤0.1

≤0.1

4

硫酸盐 (SO₄) %

≤0.01

≤0.01

≤0.01

≤0.01

5

硝酸盐(NO₃) %

≤0.01

≤0.01

≤0.01

≤0.01

6

磷酸盐PO₄) %

≤0.01

≤0.01

≤0.01

≤0.01

7

锰 (Mn) %

≤0.02

≤0.02

≤0.01

≤0.001

8

铜(Cu) %

≤0.005

≤0.005

≤0.005

≤0.001

9

亚铁(Fe²⁺) %

≤0.002

≤0.02

≤0.002

≤0.002

10

锌(Zn) %

≤0.003

≤0.003

≤0.003

≤0.001

11

砷(As) %

≤0.002

≤0.002

≤0.001

≤0.0005

12

氨水不沉淀物(硫酸盐) %
Unprecipitate byNH3(as SO₄^2-)

≤0.1

≤0.1

≤0.1

≤0.1