指标名称 | 规格 | ||
分析纯AR | 化学纯CP | 优级纯GR | |
含量 | ≥99.5% | ≥99.0% | ≥99.5% |
澄清度实验 | 合格 | 合格 | 合格 |
水不溶物 | ≤0.005% | ≤0.01% | ≤0.002% |
灼烧残渣 | ≤0.01% | ≤0.05% | ≤0.005% |
氯化物 | ≤0.0005% | ≤0.001% | ≤0.0005% |
硫酸盐 | ≤0.005% | ≤0.01% | ≤0.002% |
磷酸盐 | ≤0.002% | ≤0.005% | ≤0.0005% |
钙 | ≤0.002% | 0.005% | ≤0.002% |
铁 | ≤0.0005% | 0.001% | ≤0.0001% |
铜 | ≤0.0005% | -- | ≤0.0001% |
铅 | ≤0.0005% | ≤0.001% | -- |
砷 | -- | -- | ≤0.00005% |
重金属 | -- | -- | ≤0.0002% |
镍 | -- | -- | ≤0.0002% |
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