GB376392A - Process for the production of alkali cyanamides - Google Patents
Process for the production of alkali cyanamidesInfo
- Publication number
- GB376392A GB376392A GB11423/31A GB1142331A GB376392A GB 376392 A GB376392 A GB 376392A GB 11423/31 A GB11423/31 A GB 11423/31A GB 1142331 A GB1142331 A GB 1142331A GB 376392 A GB376392 A GB 376392A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- cyanamide
- calcium
- phosphates
- cyanamides
- 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
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/16—Cyanamide; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Mono- or di-alkali cyanamides together with di- or tri-calcium phosphates are obtained by the reaction of calcium cyanamide and alkali phosphates in aqueous solution. In addition, an alkali carbonate or hydrate, or an alkaline earth oxide may take part in the reaction. The calcium phosphates may be separated from the solution of alkali cyanamide by washing with water. If the washing is incomplete the alkali cyanamide admixed with the calcium phosphates forms a fertilizer. The alkali cyanamides may be reacted with water to produce alkali carbonate and ammonia. According to an example, di-sodium phosphate is reacted with commercial calcium cyanamide in aqueous solution. A temperature of 85-90 DEG C. may be employed but 40-50 DEG C. is preferable. Di-sodium cyanamide and di-calcium phosphate are obtained.ALSO:Mono- or di-alkali cyanamides together with di- or tri-calcium phosphates are obtained by the reaction of calcium cyanamide and alkali phosphates in aqueous solution. In addition an alkali carbonate or hydrate or an alkaline-earth oxide may take part in the reaction. The calcium phosphates may be separated from the solution of alkali cyanamide by washing with water. If the washing is incomplete the alkali cyanamide admixed with the calcium phosphates forms a fertilizer. According to an example di-sodium phosphate is reacted with commercial calcium cyanamide in aqueous solution. A temperature of 85-90 DEG C. may be employed, but 40-50 DEG C. is preferable. Di-sodium cyanamide and di-calcium phosphate are obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR694093T | 1930-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB376392A true GB376392A (en) | 1932-07-14 |
Family
ID=9043722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11423/31A Expired GB376392A (en) | 1930-04-17 | 1931-04-17 | Process for the production of alkali cyanamides |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR694093A (en) |
| GB (1) | GB376392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2557997A (en) * | 1949-07-15 | 1951-06-26 | American Cyanamid Co | Defoliant and herbicide |
-
1930
- 1930-04-17 FR FR694093D patent/FR694093A/en not_active Expired
-
1931
- 1931-04-17 GB GB11423/31A patent/GB376392A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2557997A (en) * | 1949-07-15 | 1951-06-26 | American Cyanamid Co | Defoliant and herbicide |
Also Published As
| Publication number | Publication date |
|---|---|
| FR694093A (en) | 1930-11-28 |
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