指标名称 | 规格 | ||
优级纯GR | 分析纯AR | 化学纯CP | |
含量 | ≥99.5% | ≥98.5% | ≥98.5% |
PH | - | 6.0~8.5 | - |
水溶解试验 | - | 合格 | - |
澄清度实验 | 合格 | 合格 | 合格 |
水不溶物 | ≤0.002% | ≤0.005% | ≤0.01% |
氯化物 | ≤0.02% | ≤0.02% | -- |
硫酸盐和亚硫酸盐 | ≤0.04% | ≤0.05% | ≤0.1% |
硫化物 | ≤0.0001% | ≤0.0005% | ≤0.0005% |
总氮量 | ≤0.002% | ≤0.005% | -- |
镁 | ≤0.001% | ≤0.001% | -- |
钙 | ≤0.003% | ≤0.005% | ≤0.05% |
铁 | ≤0.0005% | ≤0.001% | ≤0.001% |
重金属 | ≤0.0005% | ≤0.001% | ≤0.001% |
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