GB1219903A - Purification of methionine solutions - Google Patents

Purification of methionine solutions

Info

Publication number
GB1219903A
GB1219903A GB20017/67A GB2001767A GB1219903A GB 1219903 A GB1219903 A GB 1219903A GB 20017/67 A GB20017/67 A GB 20017/67A GB 2001767 A GB2001767 A GB 2001767A GB 1219903 A GB1219903 A GB 1219903A
Authority
GB
United Kingdom
Prior art keywords
methionine
homocystine
purification
contain
compound
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
GB20017/67A
Inventor
Philip Brook Dransfield
William Smith
George Wallace Kenner
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB20017/67A priority Critical patent/GB1219903A/en
Publication of GB1219903A publication Critical patent/GB1219903A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/26—Separation; Purification; Stabilisation; Use of additives
    • C07C319/28—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • C07C319/20—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups
    • 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
    • C07C323/50—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
    • C07C323/51—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C323/57—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C323/58—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups with amino groups bound to the carbon skeleton

Landscapes

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

Abstract

1,219,903. Purification of methionine. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 April, 1968 [1 May, 1967], No. 20017/67. Heading C2C. Aqueous solutions of methionine that contain homocystine as an impurity are treated with a chemical compound to convert the said homocystine to a compound or compounds that is/are more water-soluble, thus enabling the methionine to be precipitated as easily-filterable crystals. Preferred reagents are those that destroy the -S-S- bond of homocystine, particularly sodium bisulphite, sodium metabisulphite and potassium cyanide. The methionine solution may contain dissolved salts, e.g. up to 40% by weight of ammonium sulphate.
GB20017/67A 1967-05-01 1967-05-01 Purification of methionine solutions Expired GB1219903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB20017/67A GB1219903A (en) 1967-05-01 1967-05-01 Purification of methionine solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20017/67A GB1219903A (en) 1967-05-01 1967-05-01 Purification of methionine solutions

Publications (1)

Publication Number Publication Date
GB1219903A true GB1219903A (en) 1971-01-20

Family

ID=10138970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20017/67A Expired GB1219903A (en) 1967-05-01 1967-05-01 Purification of methionine solutions

Country Status (1)

Country Link
GB (1) GB1219903A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921118A1 (en) * 1997-12-05 1999-06-09 Mitsubishi Chemical Corporation Method for purifying homocystine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921118A1 (en) * 1997-12-05 1999-06-09 Mitsubishi Chemical Corporation Method for purifying homocystine
US6077971A (en) * 1997-12-05 2000-06-20 Mitsubishi Chemical Corporation Method for purifying homocystine

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