GB783280A - Phosphates of reduced fluorine content - Google Patents
Phosphates of reduced fluorine contentInfo
- Publication number
- GB783280A GB783280A GB2286354A GB2286354A GB783280A GB 783280 A GB783280 A GB 783280A GB 2286354 A GB2286354 A GB 2286354A GB 2286354 A GB2286354 A GB 2286354A GB 783280 A GB783280 A GB 783280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphates
- acid
- fluorine content
- reduced fluorine
- reduced
- 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
- C01B25/301—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates
-
- 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
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
- C01B25/2343—Concentration concomitant with purification, e.g. elimination of fluorine
-
- 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
- C01B25/265—General methods for obtaining phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
Abstract
Phosphoric acid, which may be used for the production of phosphates such as dicalcium phosphate, tricalcium phosphate, hydroxyapotite and alkali metal tripolyphosphates is defluorinated by bringing the acid to a concentration range of 45-55 per cent P2O5 by boiling the acid, preferably under reduced pressure. The acid may be diluted before or after the concentration step.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2286354A GB783280A (en) | 1954-08-06 | 1954-08-06 | Phosphates of reduced fluorine content |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2286354A GB783280A (en) | 1954-08-06 | 1954-08-06 | Phosphates of reduced fluorine content |
Publications (1)
Publication Number | Publication Date |
---|---|
GB783280A true GB783280A (en) | 1957-09-18 |
Family
ID=10186241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2286354A Expired GB783280A (en) | 1954-08-06 | 1954-08-06 | Phosphates of reduced fluorine content |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB783280A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1253974B (en) * | 1963-09-23 | 1967-11-09 | Krone Kg | Plastic pipe |
-
1954
- 1954-08-06 GB GB2286354A patent/GB783280A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1253974B (en) * | 1963-09-23 | 1967-11-09 | Krone Kg | Plastic pipe |
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