GB749098A - Improvements in and relating to the purification of acetic anhydride - Google Patents

Improvements in and relating to the purification of acetic anhydride

Info

Publication number
GB749098A
GB749098A GB3569553A GB3569553A GB749098A GB 749098 A GB749098 A GB 749098A GB 3569553 A GB3569553 A GB 3569553A GB 3569553 A GB3569553 A GB 3569553A GB 749098 A GB749098 A GB 749098A
Authority
GB
United Kingdom
Prior art keywords
acetic anhydride
anhydride
acid
acetic
purification
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
GB3569553A
Inventor
Geoffrey Burdett Turner
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB3569553A priority Critical patent/GB749098A/en
Priority to ES0218984A priority patent/ES218984A1/en
Publication of GB749098A publication Critical patent/GB749098A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/573—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Impure acetic anhydride, obtained by absorbing ketene in acetic acid, is purified by treatment with hydrogen peroxide or peracetic acid, preferably at a temperature between 70 DEG C. and the b.pt. of the anhydride, and subsequently distilling off the acetic anhydride. In examples (1) crude acetic anhydride is treated with sulphuric acid and 35 per cent aqueous hydrogen peroxide at 70 DEG C., the mixture allowed to stand and acetic anhydride then distilled off. (2) Crude acetic anhydride is treated with peracetic acid in acetic acid at 50 DEG C., and the purified anhydride distilled off.
GB3569553A 1953-12-23 1953-12-23 Improvements in and relating to the purification of acetic anhydride Expired GB749098A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3569553A GB749098A (en) 1953-12-23 1953-12-23 Improvements in and relating to the purification of acetic anhydride
ES0218984A ES218984A1 (en) 1953-12-23 1954-12-14 Improvements in and relating to the purification of acetic anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3569553A GB749098A (en) 1953-12-23 1953-12-23 Improvements in and relating to the purification of acetic anhydride

Publications (1)

Publication Number Publication Date
GB749098A true GB749098A (en) 1956-05-16

Family

ID=10380540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3569553A Expired GB749098A (en) 1953-12-23 1953-12-23 Improvements in and relating to the purification of acetic anhydride

Country Status (2)

Country Link
ES (1) ES218984A1 (en)
GB (1) GB749098A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008938A1 (en) * 1992-10-13 1994-04-28 Eastman Chemical Company Method for refining acetic anhydride
US5387713A (en) * 1991-01-05 1995-02-07 Bp Chemicals Limited Process for purification of carboxylic acids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387713A (en) * 1991-01-05 1995-02-07 Bp Chemicals Limited Process for purification of carboxylic acids
WO1994008938A1 (en) * 1992-10-13 1994-04-28 Eastman Chemical Company Method for refining acetic anhydride

Also Published As

Publication number Publication date
ES218984A1 (en) 1955-03-01

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