BE903323A - SYNTHESIS OF THIOGLYCOLIC ACID - Google Patents

SYNTHESIS OF THIOGLYCOLIC ACID

Info

Publication number
BE903323A
BE903323A BE0/215640A BE215640A BE903323A BE 903323 A BE903323 A BE 903323A BE 0/215640 A BE0/215640 A BE 0/215640A BE 215640 A BE215640 A BE 215640A BE 903323 A BE903323 A BE 903323A
Authority
BE
Belgium
Prior art keywords
acid
thioglycolic acid
synthesis
alkali metal
thioglycolic
Prior art date
Application number
BE0/215640A
Other languages
French (fr)
Original Assignee
Grace W R & Co
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 Grace W R & Co filed Critical Grace W R & Co
Publication of BE903323A publication Critical patent/BE903323A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups

Landscapes

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

Abstract

Procédé pour préparer l'acide thioglycolique, suivant lequel on met, dans une zone de réaction sous une pression élevée qui est d'au moins 1725 kPa au manomètre, un mélange d'acide monochloracétique et d'acide dichloracétique en contact avec un excès molaire d'un hydrogénosulfure de métal alcalin pour former le sel de métal alcalin de l'acide thioglycolique, on acidifié le sel et on recueille l'acide thioglycolique libre. Dans un procédé préféré, on recycle l'acide thiodiglycolique éventuellement formé.Process for the preparation of thioglycolic acid, according to which a mixture of monochloroacetic acid and dichloroacetic acid is in contact with a molar excess in a reaction zone under an elevated pressure which is at least 1725 kPa on a pressure gauge of an alkali metal hydrogen sulfide to form the alkali metal salt of thioglycolic acid, the salt is acidified and the free thioglycolic acid is collected. In a preferred process, the thiodiglycolic acid optionally formed is recycled.

BE0/215640A 1984-09-28 1985-09-26 SYNTHESIS OF THIOGLYCOLIC ACID BE903323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65558684A 1984-09-28 1984-09-28

Publications (1)

Publication Number Publication Date
BE903323A true BE903323A (en) 1986-01-16

Family

ID=24629498

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/215640A BE903323A (en) 1984-09-28 1985-09-26 SYNTHESIS OF THIOGLYCOLIC ACID

Country Status (9)

Country Link
JP (1) JPS61118358A (en)
BE (1) BE903323A (en)
DE (1) DE3534612A1 (en)
FR (1) FR2571051A1 (en)
GB (1) GB2164939A (en)
IT (1) IT1201473B (en)
LU (1) LU86097A1 (en)
NL (1) NL8502488A (en)
SE (1) SE8504416L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59602478D1 (en) * 1995-12-21 1999-08-26 Akzo Nobel Nv Process for the preparation of thioglycolic acid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129440A (en) * 1974-09-05 1976-03-12 Otsuka Kagaku Yakuhin CHIOGURIKOORUSANNOSEIZOHO
DE2711867A1 (en) * 1977-03-18 1978-09-21 Hoechst Ag Thioglycolic acid prepn. - by reacting mono-chloroacetic acid with e.g. Gp=IA or Gp=IIA metal bi:sulphide in aq. medium under carbon di:oxide pressure

Also Published As

Publication number Publication date
JPS61118358A (en) 1986-06-05
DE3534612A1 (en) 1986-04-17
LU86097A1 (en) 1986-03-11
SE8504416L (en) 1986-03-29
GB8523818D0 (en) 1985-10-30
IT8522282A0 (en) 1985-09-26
GB2164939A (en) 1986-04-03
JPH0584307B2 (en) 1993-12-01
IT1201473B (en) 1989-02-02
FR2571051A1 (en) 1986-04-04
NL8502488A (en) 1986-04-16
SE8504416D0 (en) 1985-09-24

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: W.R. GRACE & CO.

Effective date: 19870930