GB637412A - Process of preparing benzene hexachloride - Google Patents

Process of preparing benzene hexachloride

Info

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
Application number
GB29545/47A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay SA
Original Assignee
Solvay SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Solvay SA filed Critical Solvay SA
Publication of GB637412A publication Critical patent/GB637412A/en
Expired legal-status Critical Current

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

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.
GB29545/47A 1946-11-20 1947-11-05 Process of preparing benzene hexachloride Expired GB637412A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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