JPS5571607A - Production of dithionite - Google Patents
Production of dithioniteInfo
- Publication number
- JPS5571607A JPS5571607A JP14197678A JP14197678A JPS5571607A JP S5571607 A JPS5571607 A JP S5571607A JP 14197678 A JP14197678 A JP 14197678A JP 14197678 A JP14197678 A JP 14197678A JP S5571607 A JPS5571607 A JP S5571607A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- hydroquinones
- dithionite
- sulfite
- sulfurous
- 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 remove sulfur to such an extent that it does not act as catalyst poison and to availably obtain dithionite by hydrogenating a functional soln. prepared by reacting alkyl sulfite or the like and hydroquinones and by recycling the hydrogenated soln. to react it with the alkyl sulfite or the like.
CONSTITUTION: In a method of producing dithionite by reacting (A) (1) hydrogensulfite, pyrosulfite, alkyl sulfite or aryl sulfite of a Ia, IIa or IIb group element or ammonia or (2) a substance which reacts with (a) sulfurous anhydride or sulfurous acid to form salt of (a) and sulfurous anhydride or sulfurous acid with (B) hydroquinones, the resulting functional soln. contg. quinones is desulfurized by being contacted to an aq. alkaline soln. or slurry of pH≥11. The desulfurized soln. is then hydrogenated in the presence of VIII group metal catalyst to convert the quinones into hydroquinones, and the hydroquinones-contg. soln. is recycled to be reacted with the cpd. (A).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14197678A JPS5571607A (en) | 1978-11-17 | 1978-11-17 | Production of dithionite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14197678A JPS5571607A (en) | 1978-11-17 | 1978-11-17 | Production of dithionite |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5571607A true JPS5571607A (en) | 1980-05-29 |
Family
ID=15304490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14197678A Pending JPS5571607A (en) | 1978-11-17 | 1978-11-17 | Production of dithionite |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5571607A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014224009A (en) * | 2013-05-16 | 2014-12-04 | 三菱瓦斯化学株式会社 | Actuating solution used for hydrogen peroxide production, processing method of the same, and method of hydrogen peroxide production using the same |
-
1978
- 1978-11-17 JP JP14197678A patent/JPS5571607A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014224009A (en) * | 2013-05-16 | 2014-12-04 | 三菱瓦斯化学株式会社 | Actuating solution used for hydrogen peroxide production, processing method of the same, and method of hydrogen peroxide production using the same |
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