| 发明名称 |
Process for preparing 1-amino-2-naphthol-4-sulphonic acid (amidol acid) |
| 摘要 |
The process for preparing 1-amino-2-naphthol-4-sulphonic acid by acidifying 3-oxo-4-hydroxyimino-1,2,3,4-tetrahydronaphthalene-1-sulphonic acid or its alkali metal salt in the presence of hydrogen sulphite is carried out in the presence of iron ions.
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| 申请公布号 |
US4427601(A) |
申请公布日期 |
1984.01.24 |
| 申请号 |
US19820439474 |
申请日期 |
1982.11.05 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
HAMMERSCHMIDT, ERICH;BEHRE, HORST;BLANK, HEINZ U.;LINDNER, OTTO |
| 分类号 |
C07B61/00;B01J23/00;B01J23/74;B01J27/128;C07C67/00;C07C301/00;C07C303/22;C07C309/49;C07C309/50;(IPC1-7):C07C143/66 |
主分类号 |
C07B61/00 |
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