IT1059808B - Procedimento per la purificazione dell acido fosforico - Google Patents
Procedimento per la purificazione dell acido fosforicoInfo
- Publication number
- IT1059808B IT1059808B IT68502/73A IT6850273A IT1059808B IT 1059808 B IT1059808 B IT 1059808B IT 68502/73 A IT68502/73 A IT 68502/73A IT 6850273 A IT6850273 A IT 6850273A IT 1059808 B IT1059808 B IT 1059808B
- Authority
- IT
- Italy
- Prior art keywords
- purification
- procedure
- phosphoric acid
- phosphoric
- acid
- Prior art date
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
- 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
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extraction Or Liquid Replacement (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4538072 | 1972-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1059808B true IT1059808B (it) | 1982-06-21 |
Family
ID=10437013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT68502/73A IT1059808B (it) | 1972-10-02 | 1973-05-23 | Procedimento per la purificazione dell acido fosforico |
Country Status (8)
Country | Link |
---|---|
US (1) | US3912803A (it) |
JP (1) | JPS5924725B2 (it) |
CH (1) | CH620174A5 (it) |
DE (1) | DE2365881C3 (it) |
IL (2) | IL49211A (it) |
IT (1) | IT1059808B (it) |
NL (1) | NL8002275A (it) |
SE (1) | SE418844B (it) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4215098A (en) * | 1978-04-26 | 1980-07-29 | Albright & Wilson Limited | Purification of wet process phosphoric acid |
JPS5983962A (ja) * | 1982-10-29 | 1984-05-15 | Kamaya Kagaku Kogyo Kk | ガラス製品の加飾方法 |
US4655789A (en) * | 1985-05-08 | 1987-04-07 | Freeport Research And Engineering Company | Phosphoric acid crystallization process |
US4657559A (en) * | 1985-05-08 | 1987-04-14 | Freeport Research And Engineering Company | Process for seed crystal preparation for phosphoric acid crystallization |
US4655790A (en) * | 1985-05-08 | 1987-04-07 | Freeport Research And Development Company | Phosphoric acid crystallization process |
DE3856104T2 (de) | 1987-03-09 | 1998-06-10 | Dainippon Printing Co Ltd | Zwischenfolie zur Anwendung in einer Verbundglasscheibe |
US5006319A (en) * | 1988-03-04 | 1991-04-09 | Fmc Corporation | Process for removing iron, chromium and vanadium from phosphoric acid |
FI105909B (fi) | 1999-03-24 | 2000-10-31 | Kemira Chemicals Oy | Menetelmä fosforihapon laadun parantamiseksi |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1451786A (en) * | 1922-04-19 | 1923-04-17 | William H Ross | Process for the purification of commerical phosphoric acid by crystallization |
US1929442A (en) * | 1930-08-26 | 1933-10-10 | American Agricultural Chem Co | Process for obtaining orthophosphoric acid and/or conversion products thereof |
US1968544A (en) * | 1933-11-23 | 1934-07-31 | Grasselli Chemical Co | Phosphoric acid purification by solvent extraction |
GB974610A (en) * | 1962-05-24 | 1964-11-04 | Canadian Ind | Purification of phosphoric acid |
US3338674A (en) * | 1963-05-09 | 1967-08-29 | Avraham M Baniel | Process for preparation of substantially pure phosphoric acid |
US3707357A (en) * | 1971-03-23 | 1972-12-26 | United States Steel Corp | Wet-process phosphoric acid extraction including separating solvent from extract by freezing solvent |
-
1973
- 1973-04-19 IL IL49211A patent/IL49211A/en unknown
- 1973-04-23 US US353850A patent/US3912803A/en not_active Expired - Lifetime
- 1973-04-25 DE DE2365881A patent/DE2365881C3/de not_active Expired
- 1973-05-23 IT IT68502/73A patent/IT1059808B/it active
-
1976
- 1976-03-15 IL IL49211A patent/IL49211A0/xx unknown
- 1976-03-17 SE SE7603338A patent/SE418844B/xx unknown
-
1978
- 1978-03-13 CH CH271578A patent/CH620174A5/de not_active IP Right Cessation
-
1980
- 1980-04-18 NL NL8002275A patent/NL8002275A/nl not_active Application Discontinuation
-
1981
- 1981-06-24 JP JP56096790A patent/JPS5924725B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5742518A (en) | 1982-03-10 |
SE7603338L (sv) | 1976-03-17 |
JPS5924725B2 (ja) | 1984-06-12 |
IL49211A0 (en) | 1976-05-31 |
NL8002275A (nl) | 1980-07-31 |
US3912803A (en) | 1975-10-14 |
DE2365881C3 (de) | 1979-10-04 |
CH620174A5 (it) | 1980-11-14 |
DE2365881A1 (de) | 1976-12-09 |
SE418844B (sv) | 1981-06-29 |
IL49211A (en) | 1977-07-31 |
DE2365881B2 (de) | 1979-02-08 |
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