GB754756A - Improvements in or relating to the manufacture of thiocarbohydrazide - Google Patents
Improvements in or relating to the manufacture of thiocarbohydrazideInfo
- Publication number
- GB754756A GB754756A GB12298/54A GB1229854A GB754756A GB 754756 A GB754756 A GB 754756A GB 12298/54 A GB12298/54 A GB 12298/54A GB 1229854 A GB1229854 A GB 1229854A GB 754756 A GB754756 A GB 754756A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cooling
- hydrazine
- thiocarbohydrazide
- dithiocarbazinate
- relating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Thiocarbohydrazide is made by refluxing a solution of hydrazinium dithiocarbazinate in the presence of hydrazine. The dithiocarbazinate can be made in situ from carbon disulphide and hydrazine and the whole process can thus be carried out in one step by using at least three mols. of hydrazine per mol. of carbon disulphide. The reaction takes 1-2 hours in water at 95 DEG C. and the product crystallizes out on cooling. The yield can be improved by intermittent heating and cooling of the mixture, the separated product being removed after each cooling. Experimental details are given.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US754756XA | 1953-06-01 | 1953-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB754756A true GB754756A (en) | 1956-08-15 |
Family
ID=22126004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12298/54A Expired GB754756A (en) | 1953-06-01 | 1954-04-28 | Improvements in or relating to the manufacture of thiocarbohydrazide |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB754756A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3734757A (en) * | 1970-08-07 | 1973-05-22 | Canadian Patents Dev | Thiocarbohydrazone fungicides |
US4294985A (en) * | 1976-12-23 | 1981-10-13 | Bayer Aktiengesellschaft | Production of thiocarbohydrazide on a commercial scale |
CN103044300A (en) * | 2013-01-08 | 2013-04-17 | 杭州海虹精细化工有限公司 | Method for synthesizing thiocarbohydrazide and thioglycolate by one-step method |
CN106986802A (en) * | 2017-05-22 | 2017-07-28 | 重庆丽澄环保科技有限公司 | A kind of method for synthesizing thiocarbohydrazide |
CN109320444A (en) * | 2018-11-22 | 2019-02-12 | 湖南湘硕化工有限公司 | A kind of preparation method of thiocarbohydrazide |
-
1954
- 1954-04-28 GB GB12298/54A patent/GB754756A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3734757A (en) * | 1970-08-07 | 1973-05-22 | Canadian Patents Dev | Thiocarbohydrazone fungicides |
US4294985A (en) * | 1976-12-23 | 1981-10-13 | Bayer Aktiengesellschaft | Production of thiocarbohydrazide on a commercial scale |
CN103044300A (en) * | 2013-01-08 | 2013-04-17 | 杭州海虹精细化工有限公司 | Method for synthesizing thiocarbohydrazide and thioglycolate by one-step method |
CN106986802A (en) * | 2017-05-22 | 2017-07-28 | 重庆丽澄环保科技有限公司 | A kind of method for synthesizing thiocarbohydrazide |
CN109320444A (en) * | 2018-11-22 | 2019-02-12 | 湖南湘硕化工有限公司 | A kind of preparation method of thiocarbohydrazide |
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