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
GB1406262A
Inventor
David Duerden
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.)
Abbott Laboratories
Original Assignee
Abbott Laboratories
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 Abbott LaboratoriesfiledCriticalAbbott Laboratories
Priority to GB1406262ApriorityCriticalpatent/GB947550A/en
Publication of GB947550ApublicationCriticalpatent/GB947550A/en
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
B01D3/001—Processes specially adapted for distillation or rectification of fermented solutions
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Chemical & Material Sciences
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
Alcohols containing 1-5 carbons are made anhydrous by (a) dissolving sodium or potassium in a water-alkanol mixture, at least two atomic proportions of sodium or potassium being used for each molecular proportion of water present; (b) passing sulphur dioxide, sodium metabisulphite or potassium bisulphite into the resulting solution, at least one molecular proportion of sulphur dioxide or half a molecular proportion of metabisulphite being used for each molecular proportion of water present in the mixture; and (c) continuing the reaction at boiling temperature under reflux until the precipitation of the alkali metal sulphite is complete and the alkanol is substantially anhydrous. Examples describe the preparation of anhydrous methyl, ethyl, isoamyl and isopropyl alcohols. The process is stated to be suitable for the preparation of anhydrous n-propyl, n-butyl, isobutyl, sec-butyl, tert.-butyl, n-amyl, sec-amyl, and tert.-amyl alcohols.
GB1406262A1962-04-111962-04-11Method of rendering alcohols anhydrous
ExpiredGB947550A
(en)
Procedure for the preparation of therapeutically active sulfonated derivatives of p-dihydroxybenzene. (Machine-translation by Google Translate, not legally binding)
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A procedure for regeneration and separation of the circulating solution in cycle in the manufacture of oxygenated water (Machine-translation by Google Translate, not legally binding)