GB1052214A - - Google Patents
Info
- Publication number
- GB1052214A GB1052214A GB1052214DA GB1052214A GB 1052214 A GB1052214 A GB 1052214A GB 1052214D A GB1052214D A GB 1052214DA GB 1052214 A GB1052214 A GB 1052214A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disulphide
- salt
- solution
- acid
- sodium
- 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.)
- Active
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
Abstract
1,052,214. Preparing bis-(2-hydroxy-2-carboxyethyl) disulphide and salts thereof. STAMICARBON N.V. Aug. 9, 1963 [Aug. 9, 1962], No. 31589/63. Heading C2C. An alkali metal or alkaline earth metal salt of bis-(2-hydroxy-2-carboxyethyl) disulphide is obtained by contacting a salt of epoxyethane carboxylic acid (glycidic acid) in aqueous solution with a water-soluble alkali metal disulphide or an alkaline earth metal disulphide, e.g. calcium disulphide. The metal salt product can be converted to the free (acid) disulphide or to another salt, e.g. the sodium salt can be converted to the free acid by treatment with sulphuric acid and the calcium salt may then be formed by treating the free acid, or soluble salt thereof, e.g. the sodium salt, with calcium carbonate or calcium hydroxide. The free acid can be extracted from the aqueous reaction mixture with a solvent, e.g. pentanol-1. The salt of the epoxyethane carboxylic acid used as starting material may be obtained in situ from the free acid by using an excess of the inorganic disulphide. The process is preferably carried out by adding a solution of sodium disulphide to a solution of sodium epoxyethane carboxylate or by adding a solution of the latter to a solution of sodium disulphide, carbon dioxide being preferably passed through the solution in each case to maintain the pH at between 8À5 and 10.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1052214A true GB1052214A (en) |
Family
ID=1756863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1052214D Active GB1052214A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1052214A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0234377A1 (en) * | 1986-02-15 | 1987-09-02 | Henkel Kommanditgesellschaft auf Aktien | Alkyl-substituted 1,6-dihydroxy-3,4-sulfahexanes, process for their preparation and their use |
-
0
- GB GB1052214D patent/GB1052214A/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0234377A1 (en) * | 1986-02-15 | 1987-09-02 | Henkel Kommanditgesellschaft auf Aktien | Alkyl-substituted 1,6-dihydroxy-3,4-sulfahexanes, process for their preparation and their use |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1052214A (en) | ||
| US4789686A (en) | Process for the preparation of an aqueous solution of the sodium salt of methionine | |
| ATE121055T1 (en) | PRODUCTION OF COPPER JOINTS. | |
| GB678462A (en) | Improvements in and relating to the conservation and recovery of chemicals used in viscose spinning baths and processing liquors | |
| US1564239A (en) | Production and isolation of alkali salts of aromatic sulphonic acids | |
| GB934292A (en) | Process for the preparation of heterocyclic compounds | |
| US1741674A (en) | Process of producing cyanamid | |
| GB406788A (en) | Manufacture of aminoalkylsulphonic acids and salts thereof | |
| GB1108926A (en) | Method for producing 5-ª‰-methylmercaptoethylhydantoin | |
| GB698022A (en) | Process for the purification of phenoxy-aliphatic-mono-carboxylic acids | |
| GB633459A (en) | A process for the manufacture of n-(p-arsenosobenzyl)-glycine-amide and salts thereof | |
| GB703734A (en) | Preparation of concentrated solutions of alkylchlorphenoxyacetates | |
| GB1458250A (en) | Process for the manufacture of anthraquinone-1,8-disulphonic acid | |
| GB814688A (en) | The production of manganese hydroxide | |
| US2833716A (en) | Process for purifying and increasing combined calcium of calcium sulfonates | |
| GB712207A (en) | New sulphonamide compounds and process of preparing the same | |
| US1880701A (en) | Method for effecting bisulphite reactions with sulphur dioxide in substantially neutral solutions | |
| RU2044725C1 (en) | Process for preparing thioglicolic acid or a sodium or monoethanolamine salt thereof | |
| GB664069A (en) | Improvements in or relating to the production of soluble salts of methylchlorophenoxyacetic acids | |
| GB1440754A (en) | Method for the preparation of aminocarboxylic acid salts | |
| GB755948A (en) | Improvements in or relating to the crystallization of calcium sulfate | |
| GB402381A (en) | Improvements in method of making di-chloramine | |
| GB782094A (en) | Process for the preparation of salts of 3-hydroxy-propane-1-sulphonic acid | |
| GB190800858A (en) | Improvements in the Manufacture of Threads or Filaments from Cellulose | |
| GB1187616A (en) | Production of Adiponitrile |