GB190930379A - Improvements in the Manufacture of Stable Anhydrous Hydrosulphites. - Google Patents

Improvements in the Manufacture of Stable Anhydrous Hydrosulphites.

Info

Publication number
GB190930379A
GB190930379A GB190930379DA GB190930379A GB 190930379 A GB190930379 A GB 190930379A GB 190930379D A GB190930379D A GB 190930379DA GB 190930379 A GB190930379 A GB 190930379A
Authority
GB
United Kingdom
Prior art keywords
sodium
hyposulphite
alkali
hyposulphites
zinc
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
Inventor
James Yate Johnson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190930379A publication Critical patent/GB190930379A/en
Expired legal-status Critical Current

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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)

Abstract

30,379. Johnson, J. Y., [Badische Anilin and Soda Fabrik]. Dec. 29. Sodium, zinc-sodium, and other hyposulphites.- Hyposulphites containing water are rendered anhydrous by treatment with ammonia, at a temperature above the dehydration temperature of the hyposulphite. The ammonia solution is separated by filtration or the like. An alkali, an alkali salt, or an ammonium salt may be added, and, when other than alkali hyposulphites are being treated, the presence of the alkali salt produces anhydrous alkali hyposulphite. In the examples, ammonia is caused to act at various specified temperatures on an aqueous sodium hyposulphite paste ; on an alcoholic sodium hyposolphite paste ; on a mixture of hydrated sodium hyposulphite and sodium or ammonium chloride ; on a mixture of ammonia solution, ammonium chloride, zinc-sodium hyposulphite, and caustic soda ; and on a mixture of ammonia solution and zinc-sodium hyposulphite. Specifications 23,515/04, 22,525/06, 20,198/08, and 20,199/08 are referred to.
GB190930379D 1909-12-29 1909-12-29 Improvements in the Manufacture of Stable Anhydrous Hydrosulphites. Expired GB190930379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190930379T 1909-12-29

Publications (1)

Publication Number Publication Date
GB190930379A true GB190930379A (en) 1910-10-20

Family

ID=32447922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190930379D Expired GB190930379A (en) 1909-12-29 1909-12-29 Improvements in the Manufacture of Stable Anhydrous Hydrosulphites.

Country Status (1)

Country Link
GB (1) GB190930379A (en)

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