指标名称 | 规格 | ||||
第一基准PT | 第二基准PT | 优级纯GR | 分析纯AR | 化学纯CP | |
含量 | 99.98-100.02% | 99.95-100.05% | 99.9% | ≥99.5% | ≥98.5% |
碳酸钠溶液溶解试验 | - | - | - | 合格 | 合格 |
灼烧残渣 | - | - | - | ≤0.1% | ≤ |
氯化物 | 0.004% | 0.004% | 0.004% | ≤0.05% | ≤0.1% |
铁 | 0.0005% | 0.0005% | 0.0005% | ≤0.001% | ≤0.1% |
重金属 | 0.001% | 0.001% | 0.001% | ≤0.001% | ≤0.001% |
硫酸盐 | 0.01% | 0.01% | 0.01% | ≤0.05% | ≤0.001% |
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