GB476109A - Improvements in and relating to the production of malic acid and its compounds - Google Patents

Improvements in and relating to the production of malic acid and its compounds

Info

Publication number
GB476109A
GB476109A GB1512336A GB1512336A GB476109A GB 476109 A GB476109 A GB 476109A GB 1512336 A GB1512336 A GB 1512336A GB 1512336 A GB1512336 A GB 1512336A GB 476109 A GB476109 A GB 476109A
Authority
GB
United Kingdom
Prior art keywords
acid
parts
malic acid
carbon dioxide
relating
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
GB1512336A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1512336A priority Critical patent/GB476109A/en
Publication of GB476109A publication Critical patent/GB476109A/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/367—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by introduction of functional groups containing oxygen only in singly bound form

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Malic acid is produced by reacting maleic acid with water under heat and pressure in the presence of a strongly reactive inorganic or organic acid and a salt of mercury, zinc, cadmium, copper or other like metal of the first or second group of the Periodic System. Suitable acids are organic sulphonic acids, and carbon dioxide; sulphuric acid causes charring and does not give a satisfactory result. In an example, 20 parts of maleic acid, 2 parts of mercuric sulphate, and 100 parts of water are placed in an autoclave which is filled with carbon dioxide at 20--30 atmospheres pressure and heated to 180 DEG C. for 8 hours. On cooling, an insoluble residue is separated, consisting of fumaric acid and the mercuric catalyst, and the solution on evaporation yields crystals of malic acid.
GB1512336A 1936-05-28 1936-05-28 Improvements in and relating to the production of malic acid and its compounds Expired GB476109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1512336A GB476109A (en) 1936-05-28 1936-05-28 Improvements in and relating to the production of malic acid and its compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1512336A GB476109A (en) 1936-05-28 1936-05-28 Improvements in and relating to the production of malic acid and its compounds

Publications (1)

Publication Number Publication Date
GB476109A true GB476109A (en) 1937-11-29

Family

ID=10053442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1512336A Expired GB476109A (en) 1936-05-28 1936-05-28 Improvements in and relating to the production of malic acid and its compounds

Country Status (1)

Country Link
GB (1) GB476109A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371112A (en) * 1964-12-18 1968-02-27 Allied Chem Purification of crude malic acid liquors
US3379756A (en) * 1964-10-15 1968-04-23 Allied Chem Manufacture of malic acid
US3379757A (en) * 1964-12-30 1968-04-23 Allied Chem Malic acid synthesis
US3391187A (en) * 1965-01-18 1968-07-02 Allied Chem Purification of malic acid
USRE31139E (en) * 1964-10-15 1983-02-01 Allied Corporation Manufacture of malic acid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379756A (en) * 1964-10-15 1968-04-23 Allied Chem Manufacture of malic acid
USRE31139E (en) * 1964-10-15 1983-02-01 Allied Corporation Manufacture of malic acid
US3371112A (en) * 1964-12-18 1968-02-27 Allied Chem Purification of crude malic acid liquors
US3379757A (en) * 1964-12-30 1968-04-23 Allied Chem Malic acid synthesis
US3391187A (en) * 1965-01-18 1968-07-02 Allied Chem Purification of malic acid

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