| 发明名称 |
Process for emoving organic phosphorus compounds and other impurities from dilute sulfuric acid. |
| 摘要 |
Sulphuric acid containing dilute, organic phosphorus compounds and further impurities, which is produced, for example, in the preparation of sulphonated arylphosphines, is purified by extraction with an amine which is sparingly soluble or insoluble in water. |
| 申请公布号 |
ZA9209154(B) |
申请公布日期 |
1993.05.25 |
| 申请号 |
ZA19920009154 |
申请日期 |
1992.11.25 |
| 申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
GERHARD DIEKHAUS;HARALD KAPPESSER |
| 分类号 |
C01B17/90;C01B17/92;C07F9/50 |
主分类号 |
C01B17/90 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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