http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5622755-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_630b360599ea5cf4b5bcbc0c6c0a3e2d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C241-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C243-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate | 1979-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8db865828813248c67261e2bed32b8f2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27ea6499028f3b0231492765a2bb23fb |
| publicationDate | 1981-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5622755-A |
| titleOfInvention | Preparation of phenylhydrazine |
| abstract | PURPOSE: To obtain the titled compound in extremely high purity useful as a photographic agent, by bringing a mineral acid salt of 2,4,6-trichlorophenylhydrazine into contact with an alkali in the presence of a specific surface active agent in an aqueous medium. n CONSTITUTION: A mineral acid salt of 2,4,6-trichlorophenylhydrazine (abbrev. TCH salt) is brought into contact with an alkali (e.g., NaOH, KOH, etc.,) in an agueous medium at 20W100°C. A nonionic surface active agent (e.g., polyoxyethylene alkyl ether type, etc.) or cationic surface active agent (e.g., quaternary ammonium salt type, etc.) is present in the reaction system to give 2,4,6-trichlorophenylhydrazine. TCH salt as a starting material is obtained by diazotizing 2,4,6- trichloroaniline, reacting the resulting product with acidic sodium sulfite, followed by hydrolyzing the reaction product in the presence of the mineral acid. n COPYRIGHT: (C)1981,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5041667-A |
| priorityDate | 1979-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.