GB289383A - Improvements in processes for the manufacture of fluorine compounds having a low silicon content - Google Patents
Improvements in processes for the manufacture of fluorine compounds having a low silicon contentInfo
- Publication number
- GB289383A GB289383A GB12008/28A GB1200828A GB289383A GB 289383 A GB289383 A GB 289383A GB 12008/28 A GB12008/28 A GB 12008/28A GB 1200828 A GB1200828 A GB 1200828A GB 289383 A GB289383 A GB 289383A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrofluoric acid
- water
- acid
- manufacture
- processes
- 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
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
289,383. Verein f³r Chemische und Metallurgische Produktion. April 25, 1927, [Convention date]. Hydrofluoric acid substantially free from silicon compounds is obtained from vapours containing hydrofluoric acid and silicon fluoride obtained for example by decomposing fluor spar with sujphuric acid by first removing the water vapour and condensing substantially anhydrous hydrofluoric acid. The water may be removed either by fractional condensation, the water being separated in the first fractions or by passage over dehydrating agents such as ordinary or fuming sulphuric acid, or alkaline earth sulphates. The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of sulphates and bisulphates of the alkali metals as dehydrating agents. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS289383X | 1927-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB289383A true GB289383A (en) | 1929-07-04 |
Family
ID=5452034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12008/28A Expired GB289383A (en) | 1927-04-25 | 1928-04-24 | Improvements in processes for the manufacture of fluorine compounds having a low silicon content |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR652258A (en) |
GB (1) | GB289383A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2426841A (en) * | 1946-01-23 | 1947-09-02 | Socony Vacuum Oil Co Inc | Recovery of hydrogen fluoride |
US2661319A (en) * | 1950-03-21 | 1953-12-01 | Standard Oil Co | Hydrogen fluoride purification |
US3167391A (en) * | 1963-07-18 | 1965-01-26 | Harshaw Chem Corp | Purification of anhydrous hydrogen fluoride |
US4062930A (en) * | 1973-05-31 | 1977-12-13 | Bohdan Zawadzki | Method of production of anhydrous hydrogen fluoride |
CN113426154A (en) * | 2021-07-12 | 2021-09-24 | 宣城亨泰电子化学材料有限公司 | Electron-grade anhydrous hydrogen fluoride anion removing device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2631083A (en) * | 1952-01-19 | 1953-03-10 | Cabot Godfrey L Inc | Production of calcium fluoride and silica |
-
1928
- 1928-04-05 FR FR652258D patent/FR652258A/en not_active Expired
- 1928-04-24 GB GB12008/28A patent/GB289383A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2426841A (en) * | 1946-01-23 | 1947-09-02 | Socony Vacuum Oil Co Inc | Recovery of hydrogen fluoride |
US2661319A (en) * | 1950-03-21 | 1953-12-01 | Standard Oil Co | Hydrogen fluoride purification |
US3167391A (en) * | 1963-07-18 | 1965-01-26 | Harshaw Chem Corp | Purification of anhydrous hydrogen fluoride |
US4062930A (en) * | 1973-05-31 | 1977-12-13 | Bohdan Zawadzki | Method of production of anhydrous hydrogen fluoride |
CN113426154A (en) * | 2021-07-12 | 2021-09-24 | 宣城亨泰电子化学材料有限公司 | Electron-grade anhydrous hydrogen fluoride anion removing device |
Also Published As
Publication number | Publication date |
---|---|
FR652258A (en) | 1929-03-06 |
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