GB643700A - Purification of acetic anhydride - Google Patents

Purification of acetic anhydride

Info

Publication number
GB643700A
GB643700A GB20376/48A GB2037648A GB643700A GB 643700 A GB643700 A GB 643700A GB 20376/48 A GB20376/48 A GB 20376/48A GB 2037648 A GB2037648 A GB 2037648A GB 643700 A GB643700 A GB 643700A
Authority
GB
United Kingdom
Prior art keywords
acetic anhydride
purification
anhydride
weight
nitrite
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
GB20376/48A
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Publication of GB643700A publication Critical patent/GB643700A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54Preparation of carboxylic acid anhydrides
    • C07C51/573Separation; Purification; Stabilisation; Use of additives

Landscapes

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

Abstract

Acetic anhydride is purified by distilling in presence of sodium nitrite, the anhydride having been produced by thermal dehydration of acetic acid in presence of an ammonium phosphate catalyst. The amount of nitrite is preferably 0.1-0.5 per cent by weight of the weight of anhydride.
GB20376/48A 1947-08-13 1948-07-30 Purification of acetic anhydride Expired GB643700A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US643700XA 1947-08-13 1947-08-13

Publications (1)

Publication Number Publication Date
GB643700A true GB643700A (en) 1950-09-27

Family

ID=22055465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20376/48A Expired GB643700A (en) 1947-08-13 1948-07-30 Purification of acetic anhydride

Country Status (1)

Country Link
GB (1) GB643700A (en)

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