GB640213A - Improvements in recovery of chlorobenzene - Google Patents

Improvements in recovery of chlorobenzene

Info

Publication number
GB640213A
GB640213A GB10613/48A GB1061348A GB640213A GB 640213 A GB640213 A GB 640213A GB 10613/48 A GB10613/48 A GB 10613/48A GB 1061348 A GB1061348 A GB 1061348A GB 640213 A GB640213 A GB 640213A
Authority
GB
United Kingdom
Prior art keywords
water
chlorobenzene
acid
hydrolysis
sulphuric acid
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
GB10613/48A
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.)
Uniroyal Inc
Original Assignee
United States Rubber Co
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 United States Rubber Co filed Critical United States Rubber Co
Publication of GB640213A publication Critical patent/GB640213A/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
    • C07C17/35—Preparation of halogenated hydrocarbons by reactions not affecting the number of carbon or of halogen atoms in the reaction
    • 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)
  • Extraction Or Liquid Replacement (AREA)

Abstract

Chlorobenzene is prepared from p-chlorobenzenesulphonic acid by hydrolysing with water at the boiling-point, which is above 200 DEG C., whereby the chlorobenzene and water are distilled off, condensed and separated, water being added during the hydrolysis to maintain the boiling point above 200 DEG C. The preferred temperature range is 220-240 DEG C. Sulphuric acid, which is formed during the hydrolysis, is in practice added initially to the extent of at least 1 per cent. Two examples are given using a p-chlorobenzenesulphonic acid, sulphuric acid, and water mixture recovered from D.D.T. manufacture.
GB10613/48A 1947-04-18 1948-04-16 Improvements in recovery of chlorobenzene Expired GB640213A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA640213X 1947-04-18

Publications (1)

Publication Number Publication Date
GB640213A true GB640213A (en) 1950-07-12

Family

ID=4172034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10613/48A Expired GB640213A (en) 1947-04-18 1948-04-16 Improvements in recovery of chlorobenzene

Country Status (1)

Country Link
GB (1) GB640213A (en)

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