JPS5687682A - Manufacture of sodium dithionite - Google Patents
Manufacture of sodium dithioniteInfo
- Publication number
- JPS5687682A JPS5687682A JP16529879A JP16529879A JPS5687682A JP S5687682 A JPS5687682 A JP S5687682A JP 16529879 A JP16529879 A JP 16529879A JP 16529879 A JP16529879 A JP 16529879A JP S5687682 A JPS5687682 A JP S5687682A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- chamber
- hydrochloric acid
- manufacture
- anodic
- 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
Abstract
PURPOSE: To manufacture Na2S2O4 of high purity at an improved current efficiency, by circulating hydrochloric acid soln. through an anodic chamber separated by a cation exchange membrane while feeding hydrochloric acid to the anodic chamber, and by electrolyzing aqueous sodium hydrogensulfite soln. made by supplying SO2 to the sodium sulfite soln. in the cathodic chamber.
CONSTITUTION: Aqueous hydrochloric acid soln. is circulated through the anodic chamber of an electrolytic cell having the anodic chamber separated from the cathodic chamber with a cation exchange membrane while charging hydrochloric acid soln. to the anodic chamber. On the other hand, sulfurous acid gas is supplied to the soln. contg. sodium sulfite in the cathodic chamber to form aqueous sodium hydrogensulfite which is electrolyzed thereby manufacturing catholyte contg. Na2S2O4. Na2S2 O4.2H2O is crystallized by addition of sodium sulfite to the catholyte. To the soln. separated from the Na2S2O4.H2O is added sulfurous acid gas to form sodium hydrogensulfite, which is led to the cathodic chamber and is used for manufacturing Na2S2O4. This method allows to manufacture Na2S2O4 of high purity at about 95% current efficiency.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16529879A JPS5687682A (en) | 1979-12-19 | 1979-12-19 | Manufacture of sodium dithionite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16529879A JPS5687682A (en) | 1979-12-19 | 1979-12-19 | Manufacture of sodium dithionite |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5687682A true JPS5687682A (en) | 1981-07-16 |
JPS6240432B2 JPS6240432B2 (en) | 1987-08-28 |
Family
ID=15809667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16529879A Granted JPS5687682A (en) | 1979-12-19 | 1979-12-19 | Manufacture of sodium dithionite |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687682A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4740287A (en) * | 1986-12-19 | 1988-04-26 | Olin Corporation | Multilayer electrode electrolytic cell |
US4761216A (en) * | 1987-04-01 | 1988-08-02 | Olin Corporation | Multilayer electrode |
US4770756A (en) * | 1987-07-27 | 1988-09-13 | Olin Corporation | Electrolytic cell apparatus |
US4793906A (en) * | 1986-08-04 | 1988-12-27 | Olin Corporation | Electrochemical process for producing hydrosulfite solutions |
US4992147A (en) * | 1986-08-04 | 1991-02-12 | Olin Corporation | Electrochemical process for producing hydrosulfite solutions |
JP2004532352A (en) * | 2001-04-27 | 2004-10-21 | アイレンブルガー エレクトロリーゼ− ウント ウムヴェルトテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Process for the simultaneous electrochemical production of sodium dithionite and sodium peroxodisulfate |
-
1979
- 1979-12-19 JP JP16529879A patent/JPS5687682A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4743350A (en) * | 1986-08-04 | 1988-05-10 | Olin Corporation | Electrolytic cell |
US4793906A (en) * | 1986-08-04 | 1988-12-27 | Olin Corporation | Electrochemical process for producing hydrosulfite solutions |
US4992147A (en) * | 1986-08-04 | 1991-02-12 | Olin Corporation | Electrochemical process for producing hydrosulfite solutions |
US4740287A (en) * | 1986-12-19 | 1988-04-26 | Olin Corporation | Multilayer electrode electrolytic cell |
US4761216A (en) * | 1987-04-01 | 1988-08-02 | Olin Corporation | Multilayer electrode |
US4770756A (en) * | 1987-07-27 | 1988-09-13 | Olin Corporation | Electrolytic cell apparatus |
JP2004532352A (en) * | 2001-04-27 | 2004-10-21 | アイレンブルガー エレクトロリーゼ− ウント ウムヴェルトテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Process for the simultaneous electrochemical production of sodium dithionite and sodium peroxodisulfate |
JP4880865B2 (en) * | 2001-04-27 | 2012-02-22 | アイレンブルガー エレクトロリーゼ− ウント ウムヴェルトテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Process for simultaneous electrochemical production of sodium dithionite and sodium peroxodisulfate |
Also Published As
Publication number | Publication date |
---|---|
JPS6240432B2 (en) | 1987-08-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS56158883A (en) | Method and device for electrolytic production of chlorine dioxide | |
ES466797A1 (en) | Process for producing sodium hypochlorite | |
JPS534796A (en) | Electrolysis of pressurized alkali halide | |
ES2004272A6 (en) | Production of sodium chlorate | |
EP0103356A3 (en) | Method of making and color stabilization of choline base | |
JPS5687682A (en) | Manufacture of sodium dithionite | |
ES2105057T3 (en) | METHOD FOR ELECTROLYZING AN AQUEOUS SOLUTION OF ALCALINE CHLORIDE. | |
US3888749A (en) | Electrolytic separation of oxygen from air | |
JPS52131528A (en) | Production of glutathione of reduced type | |
DE3573621D1 (en) | Process for copper chloride aqueous electrolysis | |
JPS5641392A (en) | Electrolytic method of alkali chloride aqueous solution | |
NO984306L (en) | Method of electrolyzing a saline solution | |
JPS5798684A (en) | Electrolytic production of cysteine having high purity | |
JPS552765A (en) | Production of hydrogen sulfide by electrolysis | |
JPS54143798A (en) | Production of caustic alkali | |
JPS5467506A (en) | Manufacture of metallic sodium | |
JPS5633488A (en) | Method for electrolysis of aqueous solution of alkali chloride | |
SE514669C2 (en) | Process for electrolytic preparation of an acidified solution of hydrochloric acid | |
JPS575883A (en) | Installation of sodium chlorate electrolytic tank and chlorine-alkali electrolytic tank installed side by side | |
ES8101653A1 (en) | Electrolytic process for the preparation of sodium chlorate | |
JPS5544530A (en) | Production of sodium bromate | |
JPS53116297A (en) | Electrolyzing method for aqueous solution of alkali chloride | |
SU1275925A1 (en) | METHOD OF OBTAINING CHLORINE AND ALKALINE METAL HYDROXIDE SOLUTION | |
JPS5550469A (en) | Production of nitrite | |
ES8506821A1 (en) | Electrolytic prodn. of lead |