JPS5481220A - Purification of thioglycolic acid - Google Patents

Purification of thioglycolic acid

Info

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
Application number
JP14797577A
Other languages
Japanese (ja)
Other versions
JPS5516576B2 (en
Inventor
Kazuo Tamashima
Chiyuki Fujii
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Priority to JP14797577A priority Critical patent/JPS5481220A/en
Publication of JPS5481220A publication Critical patent/JPS5481220A/en
Publication of JPS5516576B2 publication Critical patent/JPS5516576B2/ja
Granted legal-status Critical Current

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  • 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
JP14797577A 1977-12-09 1977-12-09 Purification of thioglycolic acid Granted JPS5481220A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0272155A (en) * 1988-09-06 1990-03-12 Daicel Chem Ind Ltd Purification of thioglycolic acid

Cited By (1)

* Cited by examiner, † Cited by third party
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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