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GB1411185A - Method for the manufacture of alkali metal hydrosulphites - Google Patents

Method for the manufacture of alkali metal hydrosulphites

Info

Publication number
GB1411185A
GB1411185A GB135273A GB135273A GB1411185A GB 1411185 A GB1411185 A GB 1411185A GB 135273 A GB135273 A GB 135273A GB 135273 A GB135273 A GB 135273A GB 1411185 A GB1411185 A GB 1411185A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
hydrosulphites
manufacture
metal hydrosulphites
metabisulphite
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
GB135273A
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.)
Pennwalt Corp
Original Assignee
Pennwalt Corp
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 Pennwalt Corp filed Critical Pennwalt Corp
Publication of GB1411185A publication Critical patent/GB1411185A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1411185 Alkali metal hydrosulphites PENNWALT CORP 10 Jan 1973 [3 Aug 1972] 1352/73 Heading C1A Alkali metal hydrosulphites are made by reacting an alkali metal sulphite, bisulphite (including metabisulphite), or hydroxide with sulphur dioxide and an alkali metal formate in a liquid medium consisting of one or more of dimethylformamide, dimethylacetamide, N- methylacetamide and diethylacetamide, optionally in admixture with up to 30% by weight of water, based on the total solvent medium.
GB135273A 1972-08-03 1973-01-10 Method for the manufacture of alkali metal hydrosulphites Expired GB1411185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00277706A US3826818A (en) 1972-08-03 1972-08-03 Method for making anhydrous alkali metal hydrosulfites

Publications (1)

Publication Number Publication Date
GB1411185A true GB1411185A (en) 1975-10-22

Family

ID=23062025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB135273A Expired GB1411185A (en) 1972-08-03 1973-01-10 Method for the manufacture of alkali metal hydrosulphites

Country Status (8)

Country Link
US (1) US3826818A (en)
JP (1) JPS4945898A (en)
CA (1) CA976725A (en)
DE (1) DE2260208A1 (en)
FR (1) FR2194644B1 (en)
GB (1) GB1411185A (en)
IT (1) IT974488B (en)
SE (1) SE369704B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461785A (en) * 1973-03-30 1977-01-19 Boc Ltd Alkali metal dithionite manufacture
JPS53142398A (en) * 1977-05-17 1978-12-12 Mitsubishi Gas Chem Co Inc Production of dithionite
JPS5673602A (en) * 1979-11-22 1981-06-18 Korea Inst Sci & Tech Manufacture of sodium dithio acid anhydride
US4680136A (en) * 1985-05-07 1987-07-14 Stora Kopparbergs Bergslags Ab Method for preparing compositions which can be used in the production of sodium dithionite; and the use of such compositions

Also Published As

Publication number Publication date
SE369704B (en) 1974-09-16
US3826818A (en) 1974-07-30
FR2194644A1 (en) 1974-03-01
CA976725A (en) 1975-10-28
DE2260208A1 (en) 1974-02-14
FR2194644B1 (en) 1977-12-30
IT974488B (en) 1974-06-20
JPS4945898A (en) 1974-05-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees