发明名称 |
Process for reducing the phosphate content in the effluents from the preparation of metal salts of ascorbic acid-2-monophosphate. |
摘要 |
Process for reducing the phosphate content in the effluents from the preparation of salts of ascorbic acid 2-monophosphate, which is characterised in that A. the effluent from the crystallisation of the metal salts of ascorbic acid 2-monophosphate is treated with an alkali metal or alkaline earth metal hypochlorite, chlorine or H2O2 and B. the inorganic phosphate thus obtained by liberation from organically bound phosphorus and/or that still contained in the effluent is precipitated at a pH of 9-12 as sparingly soluble phosphate, in particular as calcium phosphate.
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申请公布号 |
EP0590556(A1) |
申请公布日期 |
1994.04.06 |
申请号 |
EP19930115522 |
申请日期 |
1993.09.25 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
KAISER, KLAUS, DR.;PAUST, JOACHIM, DR. |
分类号 |
C07D307/62;C02F1/52;C02F1/58;C07F9/655;(IPC1-7):C07F9/655 |
主分类号 |
C07D307/62 |
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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