GB436335A - An improved process for the production of alkali orthophosphates - Google Patents
An improved process for the production of alkali orthophosphatesInfo
- Publication number
- GB436335A GB436335A GB35427/34A GB3542734A GB436335A GB 436335 A GB436335 A GB 436335A GB 35427/34 A GB35427/34 A GB 35427/34A GB 3542734 A GB3542734 A GB 3542734A GB 436335 A GB436335 A GB 436335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyro
- phosphates
- meta
- alkali
- phosphoric acid
- 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
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/30—Alkali metal phosphates
- C01B25/305—Preparation from phosphorus-containing compounds by alkaline treatment
- C01B25/306—Preparation from phosphorus-containing compounds by alkaline treatment from phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
Abstract
Alkali meta- or pyro-phosphates, which may contain orthophosphate or be dissolved in a mixture of the corresponding acids, are converted into alkali orthophosphates by being intimately mixed at ordinary pressure and while at temperatures above 250 DEG C. with such quantities of water, aqueous phosphoric acid, or phosphate solutions, that, after the evaporation occurring during hydration, there still remains a slight excess of water. Examples relate to the treatment of the product obtained by heating together potassium chloride and phosphoric acid, the resulting hydrated salt obtained in one instance being the acid salt KH2PO4.H3PO4. Residual pyrophosphate may be removed from the hydrated salt by recrystallization, and the mother liquors then obtained be used for hydrating further quantities of meta- or pyro-phosphates. The process may be applied to the hydration of ammonium meta- and pyro-phosphates.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE436335X | 1933-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB436335A true GB436335A (en) | 1935-10-09 |
Family
ID=6506880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35427/34A Expired GB436335A (en) | 1933-12-09 | 1934-12-10 | An improved process for the production of alkali orthophosphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB436335A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707344A (en) * | 1984-01-25 | 1987-11-17 | Griffith Thomas | Production of ingredients for detergents and soap powders from alkali phosphates |
| WO2001074740A3 (en) * | 2000-04-03 | 2002-03-14 | Rotem Amfert Negev Ltd | Improved solubility fertilizer compounds and compositions |
-
1934
- 1934-12-10 GB GB35427/34A patent/GB436335A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707344A (en) * | 1984-01-25 | 1987-11-17 | Griffith Thomas | Production of ingredients for detergents and soap powders from alkali phosphates |
| WO2001074740A3 (en) * | 2000-04-03 | 2002-03-14 | Rotem Amfert Negev Ltd | Improved solubility fertilizer compounds and compositions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2064979A (en) | Production of alkali orthophosphates | |
| GB426392A (en) | Improvements in the manufacture of phosphoric acid | |
| GB436335A (en) | An improved process for the production of alkali orthophosphates | |
| US2191206A (en) | Process of purifying gelatin and casein | |
| GB441474A (en) | Improved manufacture of polyphosphates | |
| GB451359A (en) | Process for the manufacture of valuable products from boron fluoride and oxy-acids of phosphorus | |
| SU54794A1 (en) | The method of producing hexametaphosphate | |
| GB398888A (en) | Improvements in or relating to the manufacture of trisodium phosphate | |
| GB781806A (en) | Organic phosphate, salts thereof, and process for the manufacture thereof | |
| DE650258C (en) | Production of alkali orthophosphates | |
| GB782177A (en) | Dicalcium phosphate | |
| GB423295A (en) | A process for the simultaneous manufacture of primary sodium phosphate and boric acid | |
| GB419641A (en) | An improved process for the production of monocalcium phosphate | |
| GB253150A (en) | A new or improved process of producing metal compounds | |
| GB388663A (en) | Process for the production of dicalcium phosphate | |
| GB316550A (en) | Process for producing mono-calcium phosphate and mixtures of mono- and di-calcium phosphate | |
| GB327885A (en) | ||
| GB366547A (en) | Process of leaching phosphate rock | |
| GB322700A (en) | Improvements in and relating to the production of ammonium phosphates | |
| GB156892A (en) | Improved manufacture of insoluble thorium compounds | |
| GB648330A (en) | Process for the production of complete fertilizers | |
| GB692253A (en) | Improvements in or relating to the production of dicalcium phosphate from an acid solution containing fluorine, calcium and phosphoric acid | |
| GB410774A (en) | An improved process for the production of potassium nitrate | |
| GB630196A (en) | Process for the production of calcium magnesium phosphates | |
| GB445029A (en) | Process for the production of fertilisers |