GB750366A - Improvements in or relating to the production of guanidine salts - Google Patents
Improvements in or relating to the production of guanidine saltsInfo
- Publication number
- GB750366A GB750366A GB33331/53A GB3333153A GB750366A GB 750366 A GB750366 A GB 750366A GB 33331/53 A GB33331/53 A GB 33331/53A GB 3333153 A GB3333153 A GB 3333153A GB 750366 A GB750366 A GB 750366A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dicyandiamide
- water
- ammonium
- guanidine
- heated
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C277/00—Preparation of guanidine or its derivatives, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups
- C07C277/08—Preparation of guanidine or its derivatives, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups of substituted guanidines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Guanidine salts are obtained by heating an ammonium salt with dicyandiamide in the presence of a quantity of water the weight of which does not exceed that of the dicyandiamide but which is sufficient to prevent the reaction temperature from rising above 220 DEG C. The weight of water employed is preferably from 10 to 100 per cent of the weight of the dicyandiamide and it is preferred to choose the reaction conditions so as to limit the duration of the reaction to less than 1 hour. The reacting substances are preferably employed in quantities such as to provide one-half mol. of dicyandiamide for each ammonium radical present in the salt, a very slight excess of the salt being preferably employed. In examples: (1) dicyandiamide, ammonium nitrate, and water are heated in an autoclave for 20 minutes at 190 DEG C. to yield guanidine nitrate; (2) dicyandiamide, ammonium sulphate, and water are heated in an autoclave at 170 DEG C. for 1 1/4 hours to yield guanidine sulphate; (3) dicyandiamide, water, and industrial ammonium carbonate (a mixture of the carbonate and bicarbonate) are heated at 160 DEG C. for 40 minutes to yield guanidine carbonate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH750366X | 1953-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB750366A true GB750366A (en) | 1956-06-13 |
Family
ID=4533821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33331/53A Expired GB750366A (en) | 1953-02-24 | 1953-12-01 | Improvements in or relating to the production of guanidine salts |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB750366A (en) |
-
1953
- 1953-12-01 GB GB33331/53A patent/GB750366A/en not_active Expired
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