FI751940A - - Google Patents
Info
- Publication number
- FI751940A FI751940A FI751940A FI751940A FI751940A FI 751940 A FI751940 A FI 751940A FI 751940 A FI751940 A FI 751940A FI 751940 A FI751940 A FI 751940A FI 751940 A FI751940 A FI 751940A
- Authority
- FI
- Finland
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
- C01B25/18—Phosphoric acid
-
- 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
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
- C01B25/464—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being an ether or a mixture of ethers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI801327A FI801327A (fi) | 1974-07-06 | 1980-04-24 | Foerfarande foer rening av fosforsyra |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2432472 | 1974-07-06 | ||
| DE2432472A DE2432472C3 (de) | 1974-07-06 | 1974-07-06 | Verfahren zur Reinigung von wäßriger Phosphorsäure |
| DE19742435789 DE2435789C3 (de) | 1974-07-25 | 1974-07-25 | Verfahren zur Reinigung von Phosphorsäure mit Hilfe von 3-Methoxybutanol |
| DE2435789 | 1974-07-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI751940A true FI751940A (nl) | 1976-01-07 |
| FI58903B FI58903B (fi) | 1981-01-30 |
| FI58903C FI58903C (fi) | 1981-05-11 |
Family
ID=25767368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI751940A FI58903C (fi) | 1974-07-06 | 1975-07-03 | Foerfarande foer rening av vattenhaltig raofosforsyra |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US3996336A (nl) |
| JP (1) | JPS5137093A (nl) |
| BR (1) | BR7504253A (nl) |
| CA (1) | CA1055419A (nl) |
| CH (1) | CH618402A5 (nl) |
| DD (1) | DD120001A5 (nl) |
| DK (1) | DK304175A (nl) |
| EG (1) | EG11808A (nl) |
| ES (1) | ES438676A1 (nl) |
| FI (1) | FI58903C (nl) |
| FR (1) | FR2277031A1 (nl) |
| GB (1) | GB1493999A (nl) |
| IL (1) | IL47629A (nl) |
| IT (1) | IT1040819B (nl) |
| NL (1) | NL183180C (nl) |
| OA (1) | OA05048A (nl) |
| PH (1) | PH11819A (nl) |
| SE (1) | SE410587B (nl) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4196180A (en) * | 1973-07-04 | 1980-04-01 | Hoechst Aktiengesellschaft | Purification of phosphoric acid by means of organic solvents |
| FR2447348A1 (fr) * | 1979-01-24 | 1980-08-22 | Rhone Poulenc Ind | Procede de purification d'un acide phosphorique impur |
| DE19703884C2 (de) * | 1997-02-03 | 1999-04-29 | Bk Giulini Chem Gmbh & Co Ohg | Verfahren zur Reinigung von Naßverfahrensphosphorsäure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1050961A (nl) * | ||||
| US1929441A (en) * | 1930-08-26 | 1933-10-10 | American Agricultural Chem Co | Process for obtaining orthophosphoric acid and/or conversion product thereof |
| US1981145A (en) * | 1933-10-21 | 1934-11-20 | Minerals Separation North Us | Process of producing phosphoric acid |
| DE1261840B (de) * | 1961-12-06 | 1968-02-29 | Ministerul Ind Petrolului | Verfahren zur Herstellung hochkonzentrierter Phosphorsaeuren |
| US3318661A (en) * | 1962-12-31 | 1967-05-09 | Tennessee Corp | Process for purifying phosphoric acid |
| GB1112033A (en) * | 1964-03-30 | 1968-05-01 | Israel Mining Ind Inst For Res | Phosphoric acid recovery |
| DE2050406C3 (de) * | 1970-10-14 | 1978-04-06 | Budenheim Rud A Oetker Chemie | Verfahren zur Reinigung von technischer Phosporsäure |
-
1975
- 1975-06-12 GB GB25201/75A patent/GB1493999A/en not_active Expired
- 1975-06-18 ES ES438676A patent/ES438676A1/es not_active Expired
- 1975-06-19 PH PH17288A patent/PH11819A/en unknown
- 1975-06-24 CH CH820675A patent/CH618402A5/de not_active IP Right Cessation
- 1975-06-25 EG EG359/75A patent/EG11808A/xx active
- 1975-07-01 US US05/592,188 patent/US3996336A/en not_active Expired - Lifetime
- 1975-07-02 IL IL47629A patent/IL47629A/xx unknown
- 1975-07-02 NL NLAANVRAGE7507887,A patent/NL183180C/nl not_active IP Right Cessation
- 1975-07-02 CA CA230,601A patent/CA1055419A/en not_active Expired
- 1975-07-03 FI FI751940A patent/FI58903C/fi not_active IP Right Cessation
- 1975-07-03 SE SE7507663A patent/SE410587B/xx unknown
- 1975-07-04 OA OA55548A patent/OA05048A/xx unknown
- 1975-07-04 DD DD187099A patent/DD120001A5/xx unknown
- 1975-07-04 DK DK304175A patent/DK304175A/da not_active Application Discontinuation
- 1975-07-04 FR FR7521153A patent/FR2277031A1/fr active Granted
- 1975-07-04 IT IT50356/75A patent/IT1040819B/it active
- 1975-07-04 BR BR5443/75D patent/BR7504253A/pt unknown
- 1975-07-07 JP JP50083373A patent/JPS5137093A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| EG11808A (en) | 1978-09-30 |
| PH11819A (en) | 1978-07-19 |
| US3996336A (en) | 1976-12-07 |
| OA05048A (fr) | 1980-12-31 |
| JPS5137093A (en) | 1976-03-29 |
| DD120001A5 (nl) | 1976-05-20 |
| SE7507663L (sv) | 1976-01-07 |
| SE410587B (sv) | 1979-10-22 |
| IT1040819B (it) | 1979-12-20 |
| FR2277031A1 (fr) | 1976-01-30 |
| CA1055419A (en) | 1979-05-29 |
| FI58903B (fi) | 1981-01-30 |
| ES438676A1 (es) | 1977-03-01 |
| IL47629A (en) | 1978-03-10 |
| CH618402A5 (nl) | 1980-07-31 |
| FR2277031B1 (nl) | 1981-06-19 |
| FI58903C (fi) | 1981-05-11 |
| NL183180B (nl) | 1988-03-16 |
| GB1493999A (en) | 1977-12-07 |
| NL7507887A (nl) | 1976-01-08 |
| IL47629A0 (en) | 1975-10-15 |
| DK304175A (da) | 1976-01-07 |
| JPS537318B2 (nl) | 1978-03-16 |
| BR7504253A (pt) | 1976-07-06 |
| NL183180C (nl) | 1988-08-16 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: HOECHST AG |