执行标准：GB/T 15355-2008

规格

检测项目

优级纯GR

分析纯

化学纯

指定级

含量

≥98.0%

≥98%

≥97%

可根据客户指标定制

PH值

4.0-6.0

4.0-6.0

4.0-6.0

水不溶物

≤0.005%

≤0.005%

≤0.01%

硫酸盐

≤0.002%

≤0.005%

≤0.01%

硝酸盐

≤0.003%

≤0.005%

≤0.01%

钠

≤0.005%

≤0.01%

≤0.02%

钙

≤0.005%

≤0.01%

≤0.02%

铁

≤0.0005%

≤0.001%

≤0.002%

钴

≤0.005%

≤0.01%

≤0.05%

铜

≤0.001%

≤0.002%

≤0.005%

锌

≤0.001%

≤0.005%

≤0.02%

铅

≤0.001%

≤0.002%

≤0.005%