JPS5718655A - Preparation of acetone cyanhydrin - Google Patents

Preparation of acetone cyanhydrin

Info

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
Application number
JP9228980A
Other languages
Japanese (ja)
Other versions
JPS6121547B2 (en
Inventor
Atsuhiko Hiai
Junji Mikami
Hiroshi Kato
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP9228980A priority Critical patent/JPS5718655A/en
Publication of JPS5718655A publication Critical patent/JPS5718655A/en
Publication of JPS6121547B2 publication Critical patent/JPS6121547B2/ja
Granted legal-status Critical Current

Links

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
JP9228980A 1980-07-08 1980-07-08 Preparation of acetone cyanhydrin Granted JPS5718655A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363474A (en) * 1986-09-03 1988-03-19 古形　勝 Ion ball

Cited By (2)

* Cited by examiner, † Cited by third party
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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