指标名称

规格

优级纯GR

分析纯AR

化学纯CP

含量

≥99.6%

≥99.5%

≥98.5%

水不溶物

0.002%

≤0.005%

≤0.01%

灼烧残渣

≤0.005%

≤0.02%

0.05%

硫酸盐

≤0.002%

≤0.005%

≤0.005%

磷酸盐

≤0.0002%

≤0.0005%

≤0.001%

钠

≤0.005%

≤0.005%

--

镁

≤0.0005%

≤0.001%

≤0.002%

钾

≤ 0.005%

≤ 0.005%

-- 

钙

≤ 0.0005%

≤0.001%

≤0.002%

铁

≤0.0002%

≤0.0005%

≤0.001%

镍

≤0.0001%

-

-

铜

≤0.0002%

-

-

锌

≤0.0002%

-

-

铅

≤0.0001%

-

-