指标名称

规格

优级纯GR

分析纯AR

化学纯CP

含量

≥99.5

≥99.0%

≥98%

PH

-

7.5~9.0

7.5～9.0

澄清度实验

合格

合格

合格

水不溶物

≤0.002

≤0.002%

≤0.005%

氯化物

≤0.0003

≤0.001%

≤0.003%

硫酸盐

≤0.002

≤0.005%

≤0.005%

磷酸盐

≤0.0002

≤0.0002%

≤0.0005%

铝

≤0.0005

≤0.0005%

≤0.001%

钾

≤0.002

-

-

钙

≤0.001

≤0.002%

≤ 0.005%

铁

≤0.0002

≤0.0002%

≤0.0005%

铜

≤0.0005

≤0.0005%

≤0.001%

铅

≤0.0005

≤0.0005%

≤0.001%

还原高锰酸钾物质

≤0.005

≤0.01%

≤0.02%