GB247524A - Improved process for the manufacture of alkali hydrosulphites - Google Patents

Improved process for the manufacture of alkali hydrosulphites

Info

Publication number
GB247524A
GB247524A GB31423/25A GB3142325A GB247524A GB 247524 A GB247524 A GB 247524A GB 31423/25 A GB31423/25 A GB 31423/25A GB 3142325 A GB3142325 A GB 3142325A GB 247524 A GB247524 A GB 247524A
Authority
GB
United Kingdom
Prior art keywords
alkali
sodium
hydrosulphites
hyposulphites
manufacture
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
GB31423/25A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB247524A publication Critical patent/GB247524A/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
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C01B17/66—Dithionites or hydrosulfites (S2O42-)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

247,524. Farbenfabriken vorm. F. Bayer & Co. Feb. 14, 1925, [Convention date]. Alkali hyposulphites. - Alkali hyposulphites (hydrosulphites) are obtained by treating alkali bisulphites with alkali amalgam, care being taken to prevent the accumulation of alkali sulphite beyond about 45 grammes per litre by withdrawing mother-liquor and replacing it with water and a salt. Specifications 176,344 and 247,523 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) includes an example in which a solution is employed containing sodium bisulphite, sodium chloride, sodium thiosulphate (a bye-product) and sodium hyposulphite; the sodium hyposulphite separates and is then dehydrated. This subject-matter does not appear in the Specification as accepted.
GB31423/25A 1925-02-14 1925-12-12 Improved process for the manufacture of alkali hydrosulphites Expired GB247524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE247524X 1925-02-14

Publications (1)

Publication Number Publication Date
GB247524A true GB247524A (en) 1926-08-26

Family

ID=5935380

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31423/25A Expired GB247524A (en) 1925-02-14 1925-12-12 Improved process for the manufacture of alkali hydrosulphites

Country Status (1)

Country Link
GB (1) GB247524A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938771A (en) * 1953-04-22 1960-05-31 Joseph R Ferry Method of making hyposulfites

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938771A (en) * 1953-04-22 1960-05-31 Joseph R Ferry Method of making hyposulfites

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