GB1186664A - Process for the Continuous Production of Alkali Metal Monofluorophosphates - Google Patents
Process for the Continuous Production of Alkali Metal MonofluorophosphatesInfo
- Publication number
- GB1186664A GB1186664A GB1356268A GB1356268A GB1186664A GB 1186664 A GB1186664 A GB 1186664A GB 1356268 A GB1356268 A GB 1356268A GB 1356268 A GB1356268 A GB 1356268A GB 1186664 A GB1186664 A GB 1186664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- mixture
- alkali metal
- ratio
- na5p3o10
- 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
- C01B25/455—Phosphates containing halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Paper (AREA)
Abstract
1,186,664. Alkali metal fluorophosphate. CHEMISCHE WERKE ALBERT. 20 March, 1968 [8 April, 1967], No. 13562/68. Heading C1A. A continuous process for the production of an alkali metal (A.M.) mono-fluorophosphate (e.g. Na2PO3F) comprises making a mixture of an A.M. fluoride (or A.M. hydrogen fluoride and an A.M. salt whose acid component is preferably volatile under reaction conditions) and an A.M. meta-, pyro-, or poly-phosphate (or a phosphate which gives one of these on heating) ; continuously feeding this mixture into a heated reactor and simultaneously discharging product, the conditions of feeding, heating and discharging being such that a layer of solid reactant is maintained on top of the molten reaction mixture. The M2O : P2O5 ratio may be about 2 : 1 and the mixture may include P2O5. The said acid component may be carbonate. The temperature may be 625-750‹ C. The M2O : P2O5 : F ratio may be 2 : 1 : 2. The starting material may contain NaF and (NaPO3)3. The phosphate used may be Mandrell salt, i.e. (NaPO3)n where n is 40-70, Na5P3O10, tripolyphosphates, Na2H2P2O7 or NaH2PO4. However when using phosphates whose condensation supplies water it is preferably to carry this out prior to the process of the invention. If the phosphate is such that AM : Phosphorus ratio is higher than 1 : 1, e.g. Na5P3O10, then P2O5 may be added to give an M2O : P2O5 of about 2 : 1. The parts of the reaction vessel in contact with the reaction mixture may be made of graphite, iron, silver or platinum and the vessel may be cylindrical, conical or funnel shaped.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC0041981 | 1967-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1186664A true GB1186664A (en) | 1970-04-02 |
Family
ID=7024778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1356268A Expired GB1186664A (en) | 1967-04-08 | 1968-03-20 | Process for the Continuous Production of Alkali Metal Monofluorophosphates |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT289033B (en) |
| BE (1) | BE713133A (en) |
| DE (1) | DE1667413B1 (en) |
| FR (1) | FR1559887A (en) |
| GB (1) | GB1186664A (en) |
| NL (1) | NL143522B (en) |
| SE (1) | SE323356B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3834151C1 (en) * | 1988-10-07 | 1989-12-07 | Benckiser-Knapsack Gmbh, 6802 Ladenburg, De | |
| US5393506A (en) * | 1990-12-24 | 1995-02-28 | Kali-Chemie Aktiengesellschaft | Method for the manufacturing of alkali monofluorophosphate |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1544197A (en) * | 1975-01-14 | 1979-04-11 | Albright & Wilson | Method for the manufacture of alkali metal monofluorophosphate |
| JPS594370B2 (en) * | 1979-11-22 | 1984-01-30 | セントラル硝子株式会社 | Method for producing alkali monofluorophosphate |
-
1967
- 1967-04-08 DE DE19671667413 patent/DE1667413B1/en active Pending
-
1968
- 1968-02-16 FR FR1559887D patent/FR1559887A/fr not_active Expired
- 1968-03-20 GB GB1356268A patent/GB1186664A/en not_active Expired
- 1968-04-03 BE BE713133D patent/BE713133A/xx unknown
- 1968-04-05 AT AT336568A patent/AT289033B/en not_active IP Right Cessation
- 1968-04-08 NL NL6804958A patent/NL143522B/en unknown
- 1968-04-08 SE SE475068A patent/SE323356B/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3834151C1 (en) * | 1988-10-07 | 1989-12-07 | Benckiser-Knapsack Gmbh, 6802 Ladenburg, De | |
| US5393506A (en) * | 1990-12-24 | 1995-02-28 | Kali-Chemie Aktiengesellschaft | Method for the manufacturing of alkali monofluorophosphate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1667413B1 (en) | 1970-04-23 |
| BE713133A (en) | 1968-10-03 |
| AT289033B (en) | 1971-03-25 |
| NL6804958A (en) | 1968-10-09 |
| FR1559887A (en) | 1969-03-14 |
| SE323356B (en) | 1970-05-04 |
| NL143522B (en) | 1974-10-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |