GB347074A - Improvements in the purification of complex compounds containing phosphorus and tungsten - Google Patents
Improvements in the purification of complex compounds containing phosphorus and tungstenInfo
- Publication number
- GB347074A GB347074A GB22515/30A GB2251530A GB347074A GB 347074 A GB347074 A GB 347074A GB 22515/30 A GB22515/30 A GB 22515/30A GB 2251530 A GB2251530 A GB 2251530A GB 347074 A GB347074 A GB 347074A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aniline
- phosphotungstate
- toluidine
- monoethyl
- amine
- 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
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Crude liquors containing phosphotungstates, such as mother liquors obtained in the production or use of the compounds 3Na2O.P2O5.24WO3, 3Na2O.P2O5.16WO3, are acidified for instance with hydrochloric acid and treated with an aromatic amine, such as aniline, monoethyl- or methyl-aniline, dimethyl- or ethyl-aniline, o-toluidine, or monoethyl-o-toluidine. The precipitated phosphotungstate-amine complex, which is free from other salts, is separated, treated with an alkali such as caustic soda, and steam distilled to remove the amine and leave a purified phosphotungstate solution. A statement of the art refers to treatment of the crude liquors with lime to precipitate calcium phosphotungstate, with hydrochloric acid to precipitate an oxide of tungsten, or by evaporation to dryness.ALSO:Amino-phosphotungstate complexes are precipitated from crude liquors containing phosphotungstates by treating the acidified liquors with an aromatic amine such as aniline, monoethyl- or methyl-aniline, dimethyl- or ethyl-aniline, o-toluidine, or monoethyl-o-toluidine. The separated complex is treated with an alkali such as caustic soda and steam distilled to recover the amine and leave a purified phosphotungstate solution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US347074XA | 1929-07-25 | 1929-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB347074A true GB347074A (en) | 1931-04-23 |
Family
ID=21878095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22515/30A Expired GB347074A (en) | 1929-07-25 | 1930-07-25 | Improvements in the purification of complex compounds containing phosphorus and tungsten |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB347074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3052516A (en) * | 1959-02-10 | 1962-09-04 | Gen Mills Inc | Process for recovering tungsten values from solution |
-
1930
- 1930-07-25 GB GB22515/30A patent/GB347074A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3052516A (en) * | 1959-02-10 | 1962-09-04 | Gen Mills Inc | Process for recovering tungsten values from solution |
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