JPS5687682A - Manufacture of sodium dithionite - Google Patents

Manufacture of sodium dithionite

Info

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
Application number
JP16529879A
Other languages
Japanese (ja)
Other versions
JPS6240432B2 (en
Inventor
Tomijiro Morita
Tomoo Enoki
Minoru Yoshimori
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.)
Kureha Corp
Original Assignee
Kureha Corp
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 Kureha Corp filed Critical Kureha Corp
Priority to JP16529879A priority Critical patent/JPS5687682A/en
Publication of JPS5687682A publication Critical patent/JPS5687682A/en
Publication of JPS6240432B2 publication Critical patent/JPS6240432B2/ja
Granted legal-status Critical Current

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
JP16529879A 1979-12-19 1979-12-19 Manufacture of sodium dithionite Granted JPS5687682A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (8)

* Cited by examiner, † Cited by third party
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

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