ES260733A1 - Process for the manufacture of the calcium and ammonium salts of alpha-hydroxy-gamma-methylthiobutyric acid - Google Patents

Process for the manufacture of the calcium and ammonium salts of alpha-hydroxy-gamma-methylthiobutyric acid

Info

Publication number
ES260733A1
ES260733A1 ES0260733A ES260733A ES260733A1 ES 260733 A1 ES260733 A1 ES 260733A1 ES 0260733 A ES0260733 A ES 0260733A ES 260733 A ES260733 A ES 260733A ES 260733 A1 ES260733 A1 ES 260733A1
Authority
ES
Spain
Prior art keywords
acid
hydroxy
calcium
ammonium salts
gamma
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
ES0260733A
Other languages
Spanish (es)
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.)
F R FORSCHUNG und PATENTVERWER
Original Assignee
F R FORSCHUNG und PATENTVERWER
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 F R FORSCHUNG und PATENTVERWER filed Critical F R FORSCHUNG und PATENTVERWER
Publication of ES260733A1 publication Critical patent/ES260733A1/en
Expired legal-status Critical Current

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

Calcium or ammonium salts of a -hydroxy-g -methylthiobutyric acid are prepared from an aqueous solution of the acid by extracting the acid with an ether with a boiling point above ethyl ether e.g. isopropyl, n-propyl, or butyl ethers, and adding calcium hydroxide or carbonate, or gaseous ammonia respectively, in amounts equivalent to the acid. The process may be continuous and an example describes the preparation of the acid by saponification of methyl thiopropionaldehyde cyanhydrin with dilute sulphuric acid and its extraction with isopropyl ether, and the formation of the salts therefrom.
ES0260733A 1959-09-01 1960-08-31 Process for the manufacture of the calcium and ammonium salts of alpha-hydroxy-gamma-methylthiobutyric acid Expired ES260733A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7763059A CH385823A (en) 1959-09-01 1959-09-01 Process for the preparation of the calcium salt of a-oxy-y-methylthio-butyric acid

Publications (1)

Publication Number Publication Date
ES260733A1 true ES260733A1 (en) 1961-01-16

Family

ID=4535854

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0260733A Expired ES260733A1 (en) 1959-09-01 1960-08-31 Process for the manufacture of the calcium and ammonium salts of alpha-hydroxy-gamma-methylthiobutyric acid

Country Status (4)

Country Link
BE (1) BE594035A (en)
CH (1) CH385823A (en)
ES (1) ES260733A1 (en)
GB (1) GB915193A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272860A (en) * 1964-04-02 1966-09-13 Monsanto Co Preparation of methionine analogues
US4335257A (en) * 1980-09-05 1982-06-15 E. I. Du Pont De Nemours And Company Preparation of the calcium salt of alpha-hydroxy-gamma-methylmercaptobutyric acid
US4524077A (en) * 1983-11-14 1985-06-18 Monsanto Company Liquid 2-hydroxy-4-methylthiobutyric acid and process for the preparation thereof
ES2005784A6 (en) * 1988-02-22 1989-03-16 Desarrollo Tecnico Ind S A Soc Process for the preparation of aqueous solutions of 2-hydroxy-4-methylthio-butyric acid.
WO1996001809A1 (en) 1994-07-11 1996-01-25 Degussa Aktiengesellschaft Process for obtaining 2-hydroxy-4-methyl thiobutyric acid (mha), mha and its use
DE4428608C1 (en) * 1994-08-12 1996-02-29 Degussa Process for the production of 2-hydroxy-4-methylthiobutyric acid (MHA)
US5856567A (en) * 1995-06-07 1999-01-05 Novus International, Inc. Continuous hydrolysis process for preparing 2-hydroxy-4-methylthiobutanioc acid or salts thereof
PT832062E (en) 1995-06-07 2002-03-28 Novus Int Inc CONTINUOUS HYDROLYSIS PROCESS FOR THE PREPARATION OF 2-HYDROXY-4-METHYLTHYBUTANOIC ACID OR ITS SALTS
FR2780968B1 (en) 1998-07-10 2000-08-18 Rhone Poulenc Nutrition Animal PROCESS FOR THE PREPARATION OF HYDROXYMETHYLTHIOBUTYRIC ACID

Also Published As

Publication number Publication date
BE594035A (en) 1960-12-01
CH385823A (en) 1964-12-31
GB915193A (en) 1963-01-09

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