GB963747A - Purification of sorbic acid - Google Patents
Purification of sorbic acidInfo
- Publication number
- GB963747A GB963747A GB391661A GB391661A GB963747A GB 963747 A GB963747 A GB 963747A GB 391661 A GB391661 A GB 391661A GB 391661 A GB391661 A GB 391661A GB 963747 A GB963747 A GB 963747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- sorbic acid
- acid
- dissolving
- impure
- 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
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
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
Sorbic acid is purified by dissolving the impure acid in a relatively non-volatile, thermally-stable solvent, contacting the solution at a temperature in the range of about 160 DEG -180 DEG C. with an inert gas whereby sorbic acid volatilizes into the gas, and separating the purified acid from the mixture of gas and vapour by condensation or by washing the mixture with a suitable solvent, such as water or dodecyl benzene. The contacting stage and the washing stage may suitably be carried out in packed columns wherein the liquid flows counter current to the gas. Liquid paraffin having a minimum boiling-point of at least 300 DEG C. is a suitable solvent for dissolving the impure sorbic acid; mention is also made to dialkylphthalates in this respect. Inert gases specified are nitrogen, carbon dioxide, and steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB391661A GB963747A (en) | 1961-02-02 | 1961-02-02 | Purification of sorbic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB391661A GB963747A (en) | 1961-02-02 | 1961-02-02 | Purification of sorbic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB963747A true GB963747A (en) | 1964-07-15 |
Family
ID=9767307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB391661A Expired GB963747A (en) | 1961-02-02 | 1961-02-02 | Purification of sorbic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB963747A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129673A (en) * | 1982-09-30 | 1984-05-23 | Malcolm Charles Cornish | Storing knitting machines in cabinets |
-
1961
- 1961-02-02 GB GB391661A patent/GB963747A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129673A (en) * | 1982-09-30 | 1984-05-23 | Malcolm Charles Cornish | Storing knitting machines in cabinets |
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