GB1128860A - Process for the preparation of potassium methionate - Google Patents
Process for the preparation of potassium methionateInfo
- Publication number
- GB1128860A GB1128860A GB5400666A GB5400666A GB1128860A GB 1128860 A GB1128860 A GB 1128860A GB 5400666 A GB5400666 A GB 5400666A GB 5400666 A GB5400666 A GB 5400666A GB 1128860 A GB1128860 A GB 1128860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potassium
- sulphite
- methionate
- methylene chloride
- reaction
- 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
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,128,860. Potassium methionate. FARBWERKE HOECHST A.G. 2 Dec., 1966 [16 Dec., 1965], No. 54006/66. Heading C2C. Potassium methionate is prepared by reacting potassium sulphite with methylene chloride at a pressure below 20 atmospheres gauge and adding to the reaction mixture water in such an amount that part of the potassium sulphite remains in a suspended form. Preferably water is added such that 10-50% of the potassium sulphite is present in a suspended form and the reaction is carried out at a temperature from 90-160‹ C. Mixtures of substances such as potassium bisulphite or potassium pyrosulphite with potassium hydroxide may be used as they form potassium sulphite under the reaction conditions or potassium sulphite may be formed by direct reaction of sulphur dioxide with potassium hydroxide. The process may be carried out either by heating the mixture of methylene chloride and potassium sulphite or by heating the potassium sulphite suspension alone and then adding the methylene chloride. The product is used as an intermediate in the preparation of aluminium methionate and methionic acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0047934 | 1965-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1128860A true GB1128860A (en) | 1968-10-02 |
Family
ID=7101926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5400666A Expired GB1128860A (en) | 1965-12-16 | 1966-12-02 | Process for the preparation of potassium methionate |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT265226B (en) |
| BE (1) | BE691342A (en) |
| CH (1) | CH473098A (en) |
| DE (1) | DE1518902A1 (en) |
| FR (1) | FR1505748A (en) |
| GB (1) | GB1128860A (en) |
| NL (1) | NL6616856A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887840A (en) * | 2011-07-23 | 2013-01-23 | 联化科技股份有限公司 | Method for preparing low-water-content solid methyl disulfonic acid through taking methylene chloride as raw material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN169052B (en) * | 1987-06-01 | 1991-08-24 | Pennwalt Corp |
-
1965
- 1965-12-16 DE DE19651518902 patent/DE1518902A1/en active Pending
-
1966
- 1966-11-30 NL NL6616856A patent/NL6616856A/xx unknown
- 1966-12-02 GB GB5400666A patent/GB1128860A/en not_active Expired
- 1966-12-12 CH CH1769466A patent/CH473098A/en not_active IP Right Cessation
- 1966-12-12 AT AT1142466A patent/AT265226B/en active
- 1966-12-16 BE BE691342D patent/BE691342A/xx unknown
- 1966-12-16 FR FR87733A patent/FR1505748A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887840A (en) * | 2011-07-23 | 2013-01-23 | 联化科技股份有限公司 | Method for preparing low-water-content solid methyl disulfonic acid through taking methylene chloride as raw material |
| CN102887840B (en) * | 2011-07-23 | 2015-04-22 | 联化科技股份有限公司 | Method for preparing low-water-content solid methyl disulfonic acid through taking methylene chloride as raw material |
Also Published As
| Publication number | Publication date |
|---|---|
| CH473098A (en) | 1969-05-31 |
| AT265226B (en) | 1968-10-10 |
| BE691342A (en) | 1967-06-16 |
| DE1518902A1 (en) | 1969-08-21 |
| FR1505748A (en) | 1967-12-15 |
| NL6616856A (en) | 1967-06-19 |
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