GB956887A - Process for the purification of methyl ethyl ketone - Google Patents
Process for the purification of methyl ethyl ketoneInfo
- Publication number
- GB956887A GB956887A GB46117/61A GB4611761A GB956887A GB 956887 A GB956887 A GB 956887A GB 46117/61 A GB46117/61 A GB 46117/61A GB 4611761 A GB4611761 A GB 4611761A GB 956887 A GB956887 A GB 956887A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ketone
- mixing
- distillation
- ethyl ketone
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/85—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Impure methyl-ethyl ketone containing water, aldehydes and chlorination products, e.g. chloroketones, especially 3-chlorobutanone-2, is purified by intimately mixing the impure ketone with an aqueous alkali metal hydroxide solution of 20 to 30% by weight strength at 90 DEG to 150 DEG C. under a pressure sufficient to ensure that no substantial evaporative loss of organic phase occurs; then separating the organic layer and recovering the pure ketone therefrom by distillation. The preferred volume ratio of ketone to alkaline solution is 2:1 to 1:10 and the alkali treatment lasts for 1 to 30 minutes. The mixing is performed in an apparatus made from, or lined with, corrosion-resistant material and designed for intense mixing of two phases. It is of advantage to prepurify the starting material by distillation and degassing. Specification 876,024 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC23030A DE1124940B (en) | 1960-12-24 | 1960-12-24 | Process for purifying methyl ethyl ketone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB956887A true GB956887A (en) | 1964-04-29 |
Family
ID=7017344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46117/61A Expired GB956887A (en) | 1960-12-24 | 1961-12-22 | Process for the purification of methyl ethyl ketone |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1124940B (en) |
| GB (1) | GB956887A (en) |
-
1960
- 1960-12-24 DE DEC23030A patent/DE1124940B/en active Pending
-
1961
- 1961-12-22 GB GB46117/61A patent/GB956887A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1124940B (en) | 1962-03-08 |
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