GB635551A - Improvements in or relating to the production of fluoboric acid - Google Patents

Improvements in or relating to the production of fluoboric acid

Info

Publication number
GB635551A
GB635551A GB23515/46A GB2351546A GB635551A GB 635551 A GB635551 A GB 635551A GB 23515/46 A GB23515/46 A GB 23515/46A GB 2351546 A GB2351546 A GB 2351546A GB 635551 A GB635551 A GB 635551A
Authority
GB
United Kingdom
Prior art keywords
fluoride
ammonium
aluminium
acid
relating
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
Application number
GB23515/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Howmet Aerospace Inc
Original Assignee
Aluminum Company of America
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aluminum Company of America filed Critical Aluminum Company of America
Publication of GB635551A publication Critical patent/GB635551A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/06—Boron halogen compounds
    • C01B35/063—Tetrafluoboric acid; Salts thereof
    • C01B35/065—Tetrafluoboric acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Hydrofluoboric acid is produced by decomposing calcium fluoride, e.g. fluorspar, with sulphuric acid and boric acid in the presence of ammonium sulphate at, say, 60 DEG C. up to the boiling point, and separating calcium sulphate and other undissolved impurities. Excess sulphuric acid is neutralized by calcium carbonate. Aluminium ammonium fluoride is obtained by adding aluminium hydroxide and ammonium carbonate or ammonia, and may be decomposed to aluminium fluoride by sublimation of the ammonium fluoride or by the addition of aluminium hydroxide. Specifications 635,552 and 635,553 are referred to.
GB23515/46A 1945-08-15 1946-08-08 Improvements in or relating to the production of fluoboric acid Expired GB635551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH635551X 1945-08-15

Publications (1)

Publication Number Publication Date
GB635551A true GB635551A (en) 1950-04-12

Family

ID=4525065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23515/46A Expired GB635551A (en) 1945-08-15 1946-08-08 Improvements in or relating to the production of fluoboric acid

Country Status (1)

Country Link
GB (1) GB635551A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799559A (en) * 1953-11-06 1957-07-16 American Agricultural Chem Co Manufacture of fluoboric acid
CN102491360A (en) * 2011-12-14 2012-06-13 常熟市新华化工有限公司 Method for preparing fluoboric acid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799559A (en) * 1953-11-06 1957-07-16 American Agricultural Chem Co Manufacture of fluoboric acid
CN102491360A (en) * 2011-12-14 2012-06-13 常熟市新华化工有限公司 Method for preparing fluoboric acid

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