GB1111216A - Production of alkali metal phosphates - Google Patents
Production of alkali metal phosphatesInfo
- Publication number
- GB1111216A GB1111216A GB505866A GB505866A GB1111216A GB 1111216 A GB1111216 A GB 1111216A GB 505866 A GB505866 A GB 505866A GB 505866 A GB505866 A GB 505866A GB 1111216 A GB1111216 A GB 1111216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mh2po4
- alkali metal
- mixture
- h3po4
- temperature
- 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
- C01B25/308—Methods for converting an alkali metal orthophosphate into another one; Purification; Decolorasing; Dehydrating; Drying
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
Abstract
Alkali metal hemiphosphates, MH2PO4.H3 PO4, and mixtures with a mono alkali metal orthophosphate MH2PO4 having an M: P ratio in the mixture of between 0.5:1 and 0.75:1, are prepared by mixing anhydrous MH2PO4 with anhydrous H3PO4 in a molar proportion of MH2PO4:H3PO4 of from 1:1 to 3:1. The MH2PO4 is preferably the sodium salt, though the potassium and lithium salts may be used. The acid which has a phosphorus pentoxide content of from 70 to 76% by weight is preferably added to the phosphate which may be in the form of a spray dried powder, and the reaction may be carried out in the presence of a heel of previously prepared hemiphosphate. The temperature of the reaction mixture is preferably below 40 DEG C., but the mixture may be heated to a temperature within the range 50-70 DEG C. and then cast, by cooling the slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB505866A GB1111216A (en) | 1966-02-04 | 1966-02-04 | Production of alkali metal phosphates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB505866A GB1111216A (en) | 1966-02-04 | 1966-02-04 | Production of alkali metal phosphates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1111216A true GB1111216A (en) | 1968-04-24 |
Family
ID=9788980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB505866A Expired GB1111216A (en) | 1966-02-04 | 1966-02-04 | Production of alkali metal phosphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1111216A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880610A (en) * | 1988-04-20 | 1989-11-14 | Norian Corporation | In situ calcium phosphate minerals--method and composition |
| WO1997030593A2 (en) * | 1996-02-20 | 1997-08-28 | Monsanto Company | Novel leavening system |
| US6051200A (en) * | 1995-09-08 | 2000-04-18 | Solutia Inc. | Process for preparing hemipotassium phosphate |
-
1966
- 1966-02-04 GB GB505866A patent/GB1111216A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880610A (en) * | 1988-04-20 | 1989-11-14 | Norian Corporation | In situ calcium phosphate minerals--method and composition |
| US6051200A (en) * | 1995-09-08 | 2000-04-18 | Solutia Inc. | Process for preparing hemipotassium phosphate |
| WO1997030593A2 (en) * | 1996-02-20 | 1997-08-28 | Monsanto Company | Novel leavening system |
| WO1997030593A3 (en) * | 1996-02-20 | 1997-10-16 | Monsanto Co | Novel leavening system |
| US5773068A (en) * | 1996-02-20 | 1998-06-30 | Solutia Inc. | Leavening system and products therefrom |
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