GB445011A - Separation of chlorhydrines from hydrochloric acid solution - Google Patents
Separation of chlorhydrines from hydrochloric acid solutionInfo
- Publication number
- GB445011A GB445011A GB25042/35A GB2504235A GB445011A GB 445011 A GB445011 A GB 445011A GB 25042/35 A GB25042/35 A GB 25042/35A GB 2504235 A GB2504235 A GB 2504235A GB 445011 A GB445011 A GB 445011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- distillation
- ammonium chloride
- acid
- chlorhydrin
- ammonia
- 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
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/64—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by simultaneous introduction of -OH groups and halogens
- C07C29/66—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by simultaneous introduction of -OH groups and halogens by addition of hypohalogenous acids, which may be formed in situ, to carbon-to-carbon unsaturated bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Chlorhydrins are separated from their crude solutions containing hydrochloric acid by neutralizing the acid with ammonia or ammonium salts of weak volatile acids, and then distilling off the chlorhydrin. Before the distillation, the neutralized solution may be saturated with ammonium chloride, and during the distillation any liberated acid may be neutralized by further addition of ammonia. After the removal of the chlorhydrin, ammonium chloride is crystallized, and the mother liquor may be evaporated to dryness and purified by extraction of the impurities by means of a solvent such as alcohol or by heating to insolubilize the impurities after which the salt is recrystallized.ALSO:Ammonium chloride is obtained by neutralizing with ammonia or an ammonium salt of a weak, volatile acid the reaction mixture containing chlorhydrin and hydrochloric acid which is produced by reaction of an olefine with chlorine and water, the chlorhydrin being then distilled off. Before the distillation, the solution may be saturated with ammonium chloride, and during the distillation any acid liberated may be neutralized by further addition of ammonia. After the distillation, ammonium chloride is crystallized, and the mother liquor may be evaporated to dryness and purified by extraction of the impurities with a solvent such as alcohol, or by heating to insolubilize the impurities, after which the salt is recrystallized.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR445011X | 1934-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB445011A true GB445011A (en) | 1936-04-01 |
Family
ID=8900401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25042/35A Expired GB445011A (en) | 1934-12-26 | 1935-09-09 | Separation of chlorhydrines from hydrochloric acid solution |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB445011A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935818A (en) * | 2017-12-01 | 2018-04-20 | 山东泰和水处理科技股份有限公司 | A kind of method of separating dichloropropanol in water hydrogen chloride azeotropic mixture from dichlorohydrin |
-
1935
- 1935-09-09 GB GB25042/35A patent/GB445011A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935818A (en) * | 2017-12-01 | 2018-04-20 | 山东泰和水处理科技股份有限公司 | A kind of method of separating dichloropropanol in water hydrogen chloride azeotropic mixture from dichlorohydrin |
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