指标名称

规格

分析纯AR

化学纯CP

含量

≥99.0%

≥98.0%

澄清度实验

合格

合格

水不溶物

≤0.005%

≤0.003%

干燥失重

≤1.0%

≤2.0%

氯化物

≤0.003%

≤0.001%

硫化合物

≤0.003%

≤0.001%

氮

≤0.001%

≤0.01%

 磷酸盐及硅酸盐

≤0.005%

≤0.002%

钠

≤0.05%

≤0.1%

镁

≤0.002%

≤0.005%

钙

≤0.002%

≤0.02%

铁

≤0.0005%

≤0.002%

铜

≤0.0005%

≤0.001%

 铅

≤0.0005%

≤0.001%