GB573565A - Improvements in or relating to the concentration of aqueous acetic acid - Google Patents

Improvements in or relating to the concentration of aqueous acetic acid

Info

Publication number
GB573565A
GB573565A GB309642A GB309642A GB573565A GB 573565 A GB573565 A GB 573565A GB 309642 A GB309642 A GB 309642A GB 309642 A GB309642 A GB 309642A GB 573565 A GB573565 A GB 573565A
Authority
GB
United Kingdom
Prior art keywords
paraldehyde
concentration
acetic acid
aqueous acetic
relating
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
GB309642A
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co 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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB309642A priority Critical patent/GB573565A/en
Publication of GB573565A publication Critical patent/GB573565A/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
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation

Landscapes

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

Abstract

The concentration of aqueous acetic acid is effected by azeotropic distillation with paraldehyde. Any remaining paraldehyde may be depolymerized and distilled off and then absorbed in paraldehyde containing a little sulphuric acid to convert it into paraldehyde. Preferably, the azeotropic distillation is effected under reduced pressure to bring the boiling-point below 80 DEG C. so as to avoid any depolymerization of the paraldehyde. The initial acid may be first extracted with paraldehyde, the extract being then treated as described above.
GB309642A 1941-06-17 1941-06-17 Improvements in or relating to the concentration of aqueous acetic acid Expired GB573565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB309642A GB573565A (en) 1941-06-17 1941-06-17 Improvements in or relating to the concentration of aqueous acetic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB309642A GB573565A (en) 1941-06-17 1941-06-17 Improvements in or relating to the concentration of aqueous acetic acid

Publications (1)

Publication Number Publication Date
GB573565A true GB573565A (en) 1945-11-27

Family

ID=9751863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB309642A Expired GB573565A (en) 1941-06-17 1941-06-17 Improvements in or relating to the concentration of aqueous acetic acid

Country Status (1)

Country Link
GB (1) GB573565A (en)

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