GB586133A - Improvements in or relating to the recovery of crotonic acid - Google Patents

Improvements in or relating to the recovery of crotonic acid

Info

Publication number
GB586133A
GB586133A GB1900943A GB1900943A GB586133A GB 586133 A GB586133 A GB 586133A GB 1900943 A GB1900943 A GB 1900943A GB 1900943 A GB1900943 A GB 1900943A GB 586133 A GB586133 A GB 586133A
Authority
GB
United Kingdom
Prior art keywords
acid
crotonic acid
crotonic
sulphuric acid
sodium
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
GB1900943A
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.)
KARL HEINRICH WLATER TUERCK
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
KARL HEINRICH WLATER TUERCK
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 KARL HEINRICH WLATER TUERCK, Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical KARL HEINRICH WLATER TUERCK
Priority to GB1900943A priority Critical patent/GB586133A/en
Publication of GB586133A publication Critical patent/GB586133A/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

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

Crotonic acid is recovered from an aqueous solution containing not less than 10 per cent by weight of sodium or potassium crotonate by adding sulphuric acid in an amount in excess of that stoichiometrically necessary to decompose the sodium or potassium crotonate but not more than that necessary to produce a solution containing 10 per cent by weight of free sulphuric acid and removing the precipitated crotonic acid from the solution. Preferably the amount of sulphuric acid added is such that after removing the crotonic acid the resulting solution has a free sulphuric acid concentration of 50 to 100 gms. per litre. The process may be carried out at about 15 to 25 DEG C. The crotonic acid may be dehydrated to crotonic aldehyde, for example, by treatment with acetic anhydride. The crotonic acid may be purified by washing with water or a saturated aqueous solution of crontonic acid.
GB1900943A 1943-11-15 1943-11-15 Improvements in or relating to the recovery of crotonic acid Expired GB586133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1900943A GB586133A (en) 1943-11-15 1943-11-15 Improvements in or relating to the recovery of crotonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1900943A GB586133A (en) 1943-11-15 1943-11-15 Improvements in or relating to the recovery of crotonic acid

Publications (1)

Publication Number Publication Date
GB586133A true GB586133A (en) 1947-03-07

Family

ID=10122228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1900943A Expired GB586133A (en) 1943-11-15 1943-11-15 Improvements in or relating to the recovery of crotonic acid

Country Status (1)

Country Link
GB (1) GB586133A (en)

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