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分子式：NH4OH
外观：无色透明液体。呈强碱性。能与醇，醚相混溶。遇酸能激烈反应、放热并生成盐类。有腐蚀性。
| 含量(以NH3计) | 25.0-28.0 |
| 杂质最高含量(指标以%计) | |
| 灼烧残渣 | 0.002 |
| 氯化物(Cl) | 0.00005 |
| 硫化合物(以SO4计) | 0.0001 |
| 磷酸盐(PO4) | 0.0001 |
| 碳酸盐(CO3) | 0.001 |
| 镁(Mg) | 0.0001 |
| 钙(Ca) | 0.0001 |
| 铁(Fe) | 0.00001 |
| 重金属(以Pb计) | 0.00005 |
| 还原高锰酸钾物质 | 合格 |
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