JPS54141745A - Purification of crude benzoic acid - Google Patents
Purification of crude benzoic acidInfo
- Publication number
- JPS54141745A JPS54141745A JP4848878A JP4848878A JPS54141745A JP S54141745 A JPS54141745 A JP S54141745A JP 4848878 A JP4848878 A JP 4848878A JP 4848878 A JP4848878 A JP 4848878A JP S54141745 A JPS54141745 A JP S54141745A
- Authority
- JP
- Japan
- Prior art keywords
- benzoic acid
- inert gas
- pref
- purification
- moles
- 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 produce highly purified benzoic acid which can be used as a feed additive such as fungicide, growth accelerating agent, etc., by evaporating crude benzoic acid in the inert gas stream, and cooling the vapor in the presence of a specific amount of inert gas.
CONSTITUTION: Crude benzoic acid containing 1,000-10,000 ppm of benzylbenzoate, benzophenone derivatives, and biphenyl derivatives, is evaporated by heating at 130W180°C, pref. 140W160°C, under the inert gas stream (e.g. air, N2, etc.). The inert gas containing the vaporized benzoic acid is cooled to 80W120°C, pref. 90W110°C, in the presence of ≥40 moles, pref. ≥60 moles of inert gas based on 1 mole of the benzoic acid in the vaporized component.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4848878A JPS54141745A (en) | 1978-04-24 | 1978-04-24 | Purification of crude benzoic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4848878A JPS54141745A (en) | 1978-04-24 | 1978-04-24 | Purification of crude benzoic acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54141745A true JPS54141745A (en) | 1979-11-05 |
JPS5711899B2 JPS5711899B2 (en) | 1982-03-08 |
Family
ID=12804766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4848878A Granted JPS54141745A (en) | 1978-04-24 | 1978-04-24 | Purification of crude benzoic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54141745A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6211404B1 (en) | 1996-09-30 | 2001-04-03 | Nippon Steel Chemical Co., Ltd. | Method of refining benzoic acid |
-
1978
- 1978-04-24 JP JP4848878A patent/JPS54141745A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6211404B1 (en) | 1996-09-30 | 2001-04-03 | Nippon Steel Chemical Co., Ltd. | Method of refining benzoic acid |
Also Published As
Publication number | Publication date |
---|---|
JPS5711899B2 (en) | 1982-03-08 |
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