技术指标 | 规格 | ||
工作基准PT | 分析纯AR | 化学纯CP | |
含量(灼烧后) | ≥99.98-100.05% | ≥99.95% | ≥99.0% |
澄清度试验 | 2号 | 合格 | 合格 |
酸不溶物 | ≤0.2% | ≤0.01% | ≤0.02% |
游离碱 | - | 合格 | 合格 |
氯化物 | 合格 | ≤0.001% | ≤0.005% |
硝酸盐 | ≤0.003% | ≤0.003% | ≤0.005% |
硫化合物 | ≤0.001% | ≤0.005% | ≤0.01% |
锰 | ≤0.0005% | ≤0.001% | |
铁 | ≤0.0005% | ≤0.0005% | ≤0.0025% |
砷 | ≤0.00005% | ≤0.0002% | |
铅 | ≤0.003% | ≤0.005% | ≤0.05% |
还原高锰酸钾物质 | ≤0.0016% | 合格 | 合格 |
硫化铵不沉淀物(以硫酸盐计) | - | ≤0.1% | ≤0.25% |