指标名称

规格

优级纯GR

分析纯AR

化学纯CP

含量

≥99.5%

≥99.5%

≥99.0%

PH

-

5.0~7.0

5.0~7.0

澄清度实验

合格

合格

合格

水不溶物

≤0.005%

≤0.01%

≤0.02%

总氮量

≤0.001%

≤0.002%

≤0.005%

钠

≤0.005%

≤0.01%

≤0.02%

钾

≤0.005%

≤0.005%

≤0.01%

钙

≤0.01%

≤0.05%

≤0.1%

铁

≤0.00005%

    ≤0.0001%

  ≤0.0002%

锶

≤0.05%

≤0.05%

≤0.1%

重金属

≤0.0002%

≤0.0005%

≤0.001%