JPS5481220A - Purification of thioglycolic acid - Google Patents
Purification of thioglycolic acidInfo
- Publication number
- JPS5481220A JPS5481220A JP14797577A JP14797577A JPS5481220A JP S5481220 A JPS5481220 A JP S5481220A JP 14797577 A JP14797577 A JP 14797577A JP 14797577 A JP14797577 A JP 14797577A JP S5481220 A JPS5481220 A JP S5481220A
- Authority
- JP
- Japan
- Prior art keywords
- water
- thioglycolic acid
- layer
- organic solvent
- separated
- 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: Thioglycolic acid containing impurities as thiodiglycolic acid is brought into contact with a specific organic solvent in the presence of a specific amount of alkali and then the water layer and the organic solvent layer are separated and purified to produce high-purity thioglycol acid in high yield.
CONSTITUTION: Thioglycolic acid containing impurities such as thiodiglycolic and/ or dithioglycolic acids 6 and an alkali aqueous solution such as sodium hydroxide 5 in an amount of 0.5W2 times the equivalent quantity neutralizing the impurities are supplied to the packed part 1 of extraction column 4. Then they are brought into contact with water and a water-insoluble organic solvent 7 in the state that 2-ethylhexyl alcohol is dissolved in water, thus thioglycolic acid is separated into the orginic layer 8 in pure state and the impurities are separated from the water layer 9 as alkali salts.
EFFECT: The equipment used is simple and the energy consumption is little.
USE: Agent for cold permanent wave treatment and a starting material for tin mercaptide being a stabilizer of vinyl chloride resins.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14797577A JPS5481220A (en) | 1977-12-09 | 1977-12-09 | Purification of thioglycolic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14797577A JPS5481220A (en) | 1977-12-09 | 1977-12-09 | Purification of thioglycolic acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5481220A true JPS5481220A (en) | 1979-06-28 |
JPS5516576B2 JPS5516576B2 (en) | 1980-05-02 |
Family
ID=15442324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14797577A Granted JPS5481220A (en) | 1977-12-09 | 1977-12-09 | Purification of thioglycolic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5481220A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272155A (en) * | 1988-09-06 | 1990-03-12 | Daicel Chem Ind Ltd | Purification of thioglycolic acid |
-
1977
- 1977-12-09 JP JP14797577A patent/JPS5481220A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272155A (en) * | 1988-09-06 | 1990-03-12 | Daicel Chem Ind Ltd | Purification of thioglycolic acid |
Also Published As
Publication number | Publication date |
---|---|
JPS5516576B2 (en) | 1980-05-02 |
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