指标名称 | 规格 | ||||
第一基准 | 第二基准 | 优级纯 | 分析纯AR | 化学纯CP | |
含量 | 99.98%-100.02% | 99.95%-100.05% | ≥99.5% | ≥99.0% | ≥98.0% |
PH | 4.0-5.0 | 4.0-5.0 | 4.0-5.0 | ||
澄清度实验 | 合格 | 3号 | 合格 | 合格 | 合格 |
氯化物 | ≤0.004% | ≤0.004% | ≤0.004% | ≤0.005% | ≤0.02% |
硫酸盐 | ≤0.01% | ≤0.01% | ≤0.01% | ≤0.02% | ≤0.1% |
铁 | ≤0.0005% | ≤0.0005% | ≤0.0005% | ≤0.001% | ≤0.005% |
重金属 | ≤0.001% | ≤0.001% | ≤0.001% | ≤0.001% | ≤0.005% |
氨基三乙酸 | ≤0.05% | ≤0.05% | ≤0.05% | ||
铜 | ≤0.00025% | ≤0.00025% | ≤0.00025% | ||
水不溶物 | ≤0.003% | ||||
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