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% | |
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