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 compoundsInfo
- 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
Links
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
Landscapes
- 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.
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)
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 |
-
1936
- 1936-05-28 GB GB1512336A patent/GB476109A/en not_active Expired
Cited By (5)
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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