JPS5718655A - Preparation of acetone cyanhydrin - Google Patents
Preparation of acetone cyanhydrinInfo
- Publication number
- JPS5718655A JPS5718655A JP9228980A JP9228980A JPS5718655A JP S5718655 A JPS5718655 A JP S5718655A JP 9228980 A JP9228980 A JP 9228980A JP 9228980 A JP9228980 A JP 9228980A JP S5718655 A JPS5718655 A JP S5718655A
- Authority
- JP
- Japan
- Prior art keywords
- acetone
- distilling
- acid
- moisture
- reaction solution
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled compound in high purity, by reacting prussic acid with acetone in the presence of an alkali catalyst, neutralizing the reaction solution with an acid, recovering the prussic acid and the acetone in the first distilling step, and distilling off the moisture in the second step.
CONSTITUTION: An alkali catalyst 1, prussic acid 2 and acetone 3 are fed to a reactor 4. After the completion of the reaction, the resultant reaction solution 5 is neutralized with an acid 7 and adjusted to a given pH. The reaction solution 5 is then subjected to the separation of the formed and deposited salt by a filter 8 and fed to the first distilling column 9. In the course of the transfer, a part 12 of the distilled water from the second distilling column 10 is added thereto, and the moisture of bottoms is adjusted to 2W10wt%. The first step distillation is carried out at a bottom temperature of 110°C or below to recover the prussic acid and the acetone. The second distillation is further carried out in the second distilling column 10 at 10W70 Torr and a bottom temperature of 110°C or below. The moisture is then distilled away and separated from the top, and bottoms 18 are passed through a cooler 19 to obtain the aimed purified acetone cyanhydrin efficiently.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9228980A JPS5718655A (en) | 1980-07-08 | 1980-07-08 | Preparation of acetone cyanhydrin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9228980A JPS5718655A (en) | 1980-07-08 | 1980-07-08 | Preparation of acetone cyanhydrin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5718655A true JPS5718655A (en) | 1982-01-30 |
| JPS6121547B2 JPS6121547B2 (en) | 1986-05-27 |
Family
ID=14050243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9228980A Granted JPS5718655A (en) | 1980-07-08 | 1980-07-08 | Preparation of acetone cyanhydrin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5718655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130964A (en) * | 1981-02-05 | 1982-08-13 | Asahi Chem Ind Co Ltd | Purification of acetone cyanohydrin |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6363474A (en) * | 1986-09-03 | 1988-03-19 | 古形 勝 | Ion ball |
-
1980
- 1980-07-08 JP JP9228980A patent/JPS5718655A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130964A (en) * | 1981-02-05 | 1982-08-13 | Asahi Chem Ind Co Ltd | Purification of acetone cyanohydrin |
| JPH0132818B2 (en) * | 1981-02-05 | 1989-07-10 | Asahi Chemical Ind |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6121547B2 (en) | 1986-05-27 |
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