GB424159A - Process of preparing ethylene glycol from dichlorethane - Google Patents

Process of preparing ethylene glycol from dichlorethane

Info

Publication number
GB424159A
GB424159A GB21268/34A GB2126834A GB424159A GB 424159 A GB424159 A GB 424159A GB 21268/34 A GB21268/34 A GB 21268/34A GB 2126834 A GB2126834 A GB 2126834A GB 424159 A GB424159 A GB 424159A
Authority
GB
United Kingdom
Prior art keywords
dichlorethane
hydrolysis
ammonium
ammonia
ethylene glycol
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
GB21268/34A
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.)
CARBOCHIMIQUE SA
Original Assignee
CARBOCHIMIQUE SA
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 CARBOCHIMIQUE SA filed Critical CARBOCHIMIQUE SA
Publication of GB424159A publication Critical patent/GB424159A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/18—Polyhydroxylic acyclic alcohols
    • C07C31/20—Dihydroxylic alcohols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In the production of ethylene glycol by hydrolysis of dichlorethane, the hydrolysis is effected in presence of ammonium salts or ammonia so that the chlorine appears as ammonium chloride. The ammonia may be added as carbonate or bicarbonate, or a mixture of calcium carbonate and ammonium sulphate. In examples: (1) dichlorethane is heated to 160--170 DEG C. in an autoclave in presence of calcium carbonate, and ammonium sulphate is added gradually, with stirring; after the removal of calcium sulphate, the glycol is recovered by distillation; (2) the hydrolysis is effected under similar conditions with addition of ammonia solution, so as to maintain an acidity below 1 N.ALSO:Ammonium chloride is obtained as a bye-product in the hydrolysis of dichlorethane in presence of ammonia or an ammonium salt such as the carbonate or bicarbonate. In examples (1) dichlorethane is heated to 160--170 DEG C. in an autoclave in presence of calcium carbonate, and ammonium sulphate is added gradually, with stirring; (2) the hydrolysis is effected under similar conditions with addition of ammonia solution, so as to maintain an acidity below in.
GB21268/34A 1933-08-28 1934-07-20 Process of preparing ethylene glycol from dichlorethane Expired GB424159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR424159X 1933-08-28

Publications (1)

Publication Number Publication Date
GB424159A true GB424159A (en) 1935-02-15

Family

ID=8898770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21268/34A Expired GB424159A (en) 1933-08-28 1934-07-20 Process of preparing ethylene glycol from dichlorethane

Country Status (1)

Country Link
GB (1) GB424159A (en)

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