GB1439271A - Purification of chlorinated hydrocarbons - Google Patents
Purification of chlorinated hydrocarbonsInfo
- Publication number
- GB1439271A GB1439271A GB1434373A GB1434373A GB1439271A GB 1439271 A GB1439271 A GB 1439271A GB 1434373 A GB1434373 A GB 1434373A GB 1434373 A GB1434373 A GB 1434373A GB 1439271 A GB1439271 A GB 1439271A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chloride
- present
- chlorinated hydrocarbon
- ammonium
- march
- 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
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/395—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification of at least one compound
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1439271 Purification of chlorinated hydrocarbons IMPERIAL CHEMICAL INDUSTRIES Ltd 25 March 1974 [26 March 1973 (2)] 14343/73 and 14344/73 Heading C2C A chlorinated hydrocarbon contaminated with one or more bromohydrocarbons, optionally also chloro-substituted, is purified by contacting with a solution of an ionizable chloride in a solvent medium comprising water and/or a dipolar aprotic solvent in which the contaminated chlorinated hydrocarbon is at least partially soluble and subsequently separating the desired product. The ionizable chloride is preferably HC1, ammonium chloride or an alkali metal, alkaline earth metal or rare earth metal chloride, particularly NaCl. At least a stoichiometric amount of the chloride is added required to replace the Br content of the bromohydrocarbon but not more than 50 moles per mole of impurity. If HCl is used it is present in 5-35 wt. per cent and if ammonium or metal chlorides are used they are present in at least 5 wt. per cent. A quaternary ammonium salt may also be present in 0.01-10% by weight of the chlorinated hydrocarbon, e.g. tetra-heptyl ammonium chloride. In the examples 1,1,2- trichloroethane and perchloroethylene containing 1 -bromo-2-chloroethane contaminant are purified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1434373A GB1439271A (en) | 1973-03-26 | 1973-03-26 | Purification of chlorinated hydrocarbons |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1434473 | 1973-03-26 | ||
| GB1434373A GB1439271A (en) | 1973-03-26 | 1973-03-26 | Purification of chlorinated hydrocarbons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1439271A true GB1439271A (en) | 1976-06-16 |
Family
ID=26250500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1434373A Expired GB1439271A (en) | 1973-03-26 | 1973-03-26 | Purification of chlorinated hydrocarbons |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1439271A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10968153B2 (en) | 2019-08-14 | 2021-04-06 | Eagle Us 2 Llc | Method of converting a brominated hydrocarbon to a chlorinated hydrocarbon |
-
1973
- 1973-03-26 GB GB1434373A patent/GB1439271A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10968153B2 (en) | 2019-08-14 | 2021-04-06 | Eagle Us 2 Llc | Method of converting a brominated hydrocarbon to a chlorinated hydrocarbon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |