JPS5562036A - Purification of p-hydroxybenzaldehyde - Google Patents
Purification of p-hydroxybenzaldehydeInfo
- Publication number
- JPS5562036A JPS5562036A JP13532378A JP13532378A JPS5562036A JP S5562036 A JPS5562036 A JP S5562036A JP 13532378 A JP13532378 A JP 13532378A JP 13532378 A JP13532378 A JP 13532378A JP S5562036 A JPS5562036 A JP S5562036A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- hydroxybenzaldehyde
- thin
- film vacuum
- vacuum evaporator
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To purify the title compound, an intermediate of pharmaceuticals, agricultural chemicals, perfumes, etc., in high yield without lowering its quality, by distillation of p-hydroxybenzaldehyde with a thin-film vacuum evaporator in a short period at a temperature as low as possible.
CONSTITUTION: Crude p-hydroxybenzaldehyde is purified by distillation with a thin-film vacuum evaporator at 100°CW180°C. For example a film evaporator is preferable as the thin-film vacuum evaporator. However, any evaporator may be used, if it has a device which enables the evaporation of the material at a fixed temp. in a short period. Addition of the third component, e.g. bisphenol A, dioctylphthalate etc., is effective to increase the fluidity of the residual liquid and to prevent the blocking of the device.
EFFECT: High bulk density.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13532378A JPS5562036A (en) | 1978-11-02 | 1978-11-02 | Purification of p-hydroxybenzaldehyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13532378A JPS5562036A (en) | 1978-11-02 | 1978-11-02 | Purification of p-hydroxybenzaldehyde |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5562036A true JPS5562036A (en) | 1980-05-10 |
Family
ID=15149062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13532378A Pending JPS5562036A (en) | 1978-11-02 | 1978-11-02 | Purification of p-hydroxybenzaldehyde |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5562036A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011042810A (en) * | 2010-12-03 | 2011-03-03 | Nippon Zeon Co Ltd | Method for producing alkyl jasmonate with high epimer concentration |
JP2011528331A (en) * | 2008-07-18 | 2011-11-17 | ロデイア・オペラシヨン | Aromatic aldehyde separation method |
-
1978
- 1978-11-02 JP JP13532378A patent/JPS5562036A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011528331A (en) * | 2008-07-18 | 2011-11-17 | ロデイア・オペラシヨン | Aromatic aldehyde separation method |
US9018421B2 (en) | 2008-07-18 | 2015-04-28 | Rhodia Operations | Separation of aromatic aldehydes |
JP2011042810A (en) * | 2010-12-03 | 2011-03-03 | Nippon Zeon Co Ltd | Method for producing alkyl jasmonate with high epimer concentration |
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