GB637412A - Process of preparing benzene hexachloride - Google Patents
Process of preparing benzene hexachlorideInfo
- Publication number
- GB637412A GB637412A GB29545/47A GB2954547A GB637412A GB 637412 A GB637412 A GB 637412A GB 29545/47 A GB29545/47 A GB 29545/47A GB 2954547 A GB2954547 A GB 2954547A GB 637412 A GB637412 A GB 637412A
- Authority
- GB
- United Kingdom
- Prior art keywords
- benzene
- mixture
- chlorine
- solution
- temperature
- 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
- C07C17/013—Preparation of halogenated hydrocarbons by addition of halogens
- C07C17/02—Preparation of halogenated hydrocarbons by addition of halogens to unsaturated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Benzene hexachloride is prepared by chlorination or benzene in solution in an inert solvent in presence of light at a temperature between the crystallization temperature of benzene and the crystallization temperature of the mixture of benzene with the solvent. The latter is preferably carbon tetrachloride, and in this case the temperature range is 6 DEG to - 47 DEG C. It is also preferred to use more benzene than corresponds with saturation of the solvent at the operating temperature, i.e. solid benzene will be present as a reserve. The process may be operated in a continuous manner by the introduction of stoichiometric amounts of chlorine and fresh benzene into a mixture of benzene and inert solvent saturated with benzene hexachloride, and separation of crystals of C6H6Cl6. In the examples: (1) a mixture of 70 per cent carbon tetrachloride and 30 per cent benzene is chlorinated at - 20 DEG C. with a mixture of chlorine and carbon dioxide, and (2) the continuous process is exemplified using a solution of benzene in carbon tetrachloride at - 40 DEG C. and a solution of chlorine in benzene at - 20 DEG C. Specifications 619,677 and 626,705 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE637412X | 1946-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB637412A true GB637412A (en) | 1950-05-17 |
Family
ID=3876262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29545/47A Expired GB637412A (en) | 1946-11-20 | 1947-11-05 | Process of preparing benzene hexachloride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB637412A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE892594C (en) * | 1950-02-06 | 1953-10-08 | Ici Ltd | Process for the production of benzene hexachloride (hexachlorocyclohexane) with a content of ª † -isomer of at least 20 percent by weight |
| DE1124486B (en) * | 1955-06-20 | 1962-03-01 | Stauffer Chemical Co | Process for the continuous production of oil-free hexachlorocyclohexane |
-
1947
- 1947-11-05 GB GB29545/47A patent/GB637412A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE892594C (en) * | 1950-02-06 | 1953-10-08 | Ici Ltd | Process for the production of benzene hexachloride (hexachlorocyclohexane) with a content of ª † -isomer of at least 20 percent by weight |
| DE1124486B (en) * | 1955-06-20 | 1962-03-01 | Stauffer Chemical Co | Process for the continuous production of oil-free hexachlorocyclohexane |
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