GB895119A - Process for purifying impure cresols, particularly those with a strong odour - Google Patents
Process for purifying impure cresols, particularly those with a strong odourInfo
- Publication number
- GB895119A GB895119A GB26916/58A GB2691658A GB895119A GB 895119 A GB895119 A GB 895119A GB 26916/58 A GB26916/58 A GB 26916/58A GB 2691658 A GB2691658 A GB 2691658A GB 895119 A GB895119 A GB 895119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cresol
- cresolate
- solution
- cresols
- aqueous
- 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/86—Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for the purification of impure cresols, particularly those with a strong odour, consists in first converting the impure cresol into an aqueous cresolate solution, then extracting the aqueous cresolate solution with cresol or one of its homologues in which the cresolate is insoluble or difficulty soluble to remove the impurities and separating the purified aqueous cresolate from the cresol or homologue thereof containing the impurities and treating said purified aqueous cresolate by known means to regenerate cresol and then recovering same from the aqueous solution. The term "cresols" is intended to include mixtures of isomeric cresols with homologous alkyl phenols and homogenous cresols such as o-, m- or p-cresol. The process may be carried out by converting the cresol or cresol mixture with, e.g. lime in the presence of water into an aqueous calcium cresolate solution diluting such solution with water so that part of the cresol separates and contains the impurities, the polluted cresol is separated and the remaining pure cresolate solution is treated to liberate and separate cresol, e.g. by acidification with hydrochloric acid and distillation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT895119X | 1958-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895119A true GB895119A (en) | 1962-05-02 |
Family
ID=3682854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26916/58A Expired GB895119A (en) | 1958-01-10 | 1958-08-21 | Process for purifying impure cresols, particularly those with a strong odour |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB895119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5750009A (en) * | 1994-08-31 | 1998-05-12 | Dakota Gasification Company | Method for purifying natural cresylic acid mixtures |
-
1958
- 1958-08-21 GB GB26916/58A patent/GB895119A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5750009A (en) * | 1994-08-31 | 1998-05-12 | Dakota Gasification Company | Method for purifying natural cresylic acid mixtures |
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