JPS5571623A - Production of pyrosulfite - Google Patents

Production of pyrosulfite

Info

Publication number
JPS5571623A
JPS5571623A JP14503478A JP14503478A JPS5571623A JP S5571623 A JPS5571623 A JP S5571623A JP 14503478 A JP14503478 A JP 14503478A JP 14503478 A JP14503478 A JP 14503478A JP S5571623 A JPS5571623 A JP S5571623A
Authority
JP
Japan
Prior art keywords
alcohols
pyrosulfite
butanol
sulfur dioxide
soln
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
Application number
JP14503478A
Other languages
Japanese (ja)
Inventor
Hiroshi Miyamori
Masanori Sakurai
Hideo Uno
Hiroshi Masai
Makoto Kobayashi
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co 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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP14503478A priority Critical patent/JPS5571623A/en
Publication of JPS5571623A publication Critical patent/JPS5571623A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain high purity pyrosulfite useful as pharmaceuticals, a bleaching agent, etc. in a high yield by reacting sulfite and sulfur dioxide in the presence of 1W4C alcohols.
CONSTITUTION: Powdered sulfite is suspended or dissolved in 1W4C alcohols such as methanol, ethanol, n-propanol, isopropanol, n-butanol, sec. butanol and tert. butanol. Sulfur dioxide gas or a soln. of sulfur dioxide in alcohols is then added to the suspension or soln. and reacted usually at -20W150, pref. 5W120°C for about 10minW10hr. After the reaction the alcohols are distilled out, and pyrosulfite is separation-purified from the distillation residue. By this method high purity pyrosulfite of lithium, sodium, ammonium or the like is obtd. in a high yield.
COPYRIGHT: (C)1980,JPO&Japio
JP14503478A 1978-11-24 1978-11-24 Production of pyrosulfite Pending JPS5571623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14503478A JPS5571623A (en) 1978-11-24 1978-11-24 Production of pyrosulfite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14503478A JPS5571623A (en) 1978-11-24 1978-11-24 Production of pyrosulfite

Publications (1)

Publication Number Publication Date
JPS5571623A true JPS5571623A (en) 1980-05-29

Family

ID=15375868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14503478A Pending JPS5571623A (en) 1978-11-24 1978-11-24 Production of pyrosulfite

Country Status (1)

Country Link
JP (1) JPS5571623A (en)

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