指标名称

规格

第一基准

第二基准

优级纯

分析纯AR

化学纯CP

含量

99.98%-100.02%

99.95%-100.05%

≥99.5%

≥99.0%

≥98.0%

PH

4.0-5.0

4.0-5.0

4.0-5.0

澄清度实验

合格

3号

合格

合格

合格

氯化物

≤0.004%

≤0.004%

≤0.004%

≤0.005%

≤0.02%

硫酸盐

≤0.01%

≤0.01%

≤0.01%

≤0.02%

≤0.1%

铁

≤0.0005%

≤0.0005%

≤0.0005%

≤0.001%

≤0.005%

重金属

≤0.001%

≤0.001%

≤0.001%

≤0.001%

≤0.005%

氨基三乙酸

≤0.05%

≤0.05%

≤0.05%

铜

≤0.00025%

≤0.00025%

≤0.00025%

水不溶物

≤0.003%