GB1504087A - Process for treating the mother liquor in the production of anhydrous sodium dithionite - Google Patents

Process for treating the mother liquor in the production of anhydrous sodium dithionite

Info

Publication number
GB1504087A
GB1504087A GB2065976A GB2065976A GB1504087A GB 1504087 A GB1504087 A GB 1504087A GB 2065976 A GB2065976 A GB 2065976A GB 2065976 A GB2065976 A GB 2065976A GB 1504087 A GB1504087 A GB 1504087A
Authority
GB
United Kingdom
Prior art keywords
treating
production
anhydrous sodium
mother liquor
sodium dithionite
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.)
Expired
Application number
GB2065976A
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals 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
Priority claimed from JP50059570A external-priority patent/JPS51136597A/en
Priority claimed from JP50059569A external-priority patent/JPS51136596A/en
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Publication of GB1504087A publication Critical patent/GB1504087A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C01B17/66—Dithionites or hydrosulfites (S2O42-)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Paper (AREA)

Abstract

1504087 Anhydrous Na 2 S 2 O 4 MITSUI TOATSU CHEMICALS Inc 19 May 1976 [21 May 1975 (2)] 20659/76 Heading C1A Anhydrous Na 2 S 2 O 4 is prepared in a cyclic process from HCOONa, NaOH and H 2 SO 3 (anhydride) in aqueous MeOH, separating the Na 2 S 2 O 4 and cooling the remaining reaction mixture to + 5‹ to -30‹ C. to precipitate Na 2 S 2 O 3 , which is removed by filtration, the filtrate being recycled to the reaction mixture for the preparation of further Na 2 S 2 O 4 .
GB2065976A 1975-05-21 1976-05-19 Process for treating the mother liquor in the production of anhydrous sodium dithionite Expired GB1504087A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP50059570A JPS51136597A (en) 1975-05-21 1975-05-21 Method for processing mother solution of sodium dithionite anhydride production
JP50059569A JPS51136596A (en) 1975-05-21 1975-05-21 Method for processing mot her liquid in the production of sodium dithionite

Publications (1)

Publication Number Publication Date
GB1504087A true GB1504087A (en) 1978-03-15

Family

ID=26400615

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2065976A Expired GB1504087A (en) 1975-05-21 1976-05-19 Process for treating the mother liquor in the production of anhydrous sodium dithionite

Country Status (4)

Country Link
DE (1) DE2622952C3 (en)
ES (1) ES448077A1 (en)
FR (1) FR2311752A1 (en)
GB (1) GB1504087A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006115830A1 (en) * 2005-04-20 2006-11-02 Cabot Corporation Methods of forming an alkali metal salt

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590058A (en) * 1985-02-21 1986-05-20 Olin Corporation Process for producing high purity solutions of alkali metal hydrosulfites
CA2016353A1 (en) * 1989-05-23 1990-11-23 Charles E. Winslow, Jr. Method for re-use of aqueous co-product from manufacture of sodium dithionite
DE102004053090A1 (en) 2004-11-03 2006-05-04 Basf Ag Process for the preparation of sodium dithionite

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006115830A1 (en) * 2005-04-20 2006-11-02 Cabot Corporation Methods of forming an alkali metal salt
AU2006240243B2 (en) * 2005-04-20 2011-02-10 Cabot Corporation Methods of forming an alkali metal salt
AU2006240243B9 (en) * 2005-04-20 2011-06-30 Cabot Corporation Methods of forming an alkali metal salt
NO343684B1 (en) * 2005-04-20 2019-05-06 Cabot Corp Process for the preparation of cesium salt

Also Published As

Publication number Publication date
FR2311752B1 (en) 1980-09-19
DE2622952A1 (en) 1976-11-25
DE2622952B2 (en) 1979-02-01
DE2622952C3 (en) 1979-09-27
ES448077A1 (en) 1977-07-01
FR2311752A1 (en) 1976-12-17

Similar Documents

Publication Publication Date Title
ES425528A1 (en) Method for recovering a liquid-phase oxidation catalyst for preparation of terephthalic acid
GB1504087A (en) Process for treating the mother liquor in the production of anhydrous sodium dithionite
GB1220963A (en) Process for the production of phosphoric acid at a high concentration and gypsum by-product of improved quality
GB1434687A (en) Process for recovery of epsilon-carpolactam from a reaction mixture of epsilon-caprolactam and sulphuric acid
US3448119A (en) Producing tetramethylisoindolenine by heating acetonylacetone in aqueous ammonium salt
US2773752A (en) Crystallization of sodium cyanide
GB1338779A (en) Process for the manufacture of sodium bicarbonate
GB1454698A (en) Process for obtaining xylose
GB1244074A (en) Process for the production of sodium methallyl sulphonate
US2715644A (en) Purification of sodium gentisate
GB579459A (en) Process for the purification of 4-hydroxycoumarins
GB953387A (en) 5-allyl-5-(ª‰-hydroxypropyl)-barbituric acid and a process for the production thereof
US3212850A (en) Preparation of alkali metal peroxides
GB1375996A (en) Processes for up-grading alumina
GB1211417A (en) Process for the production of pure lactulose
GB1203950A (en) Process for the separation of useful compounds from waste formed from the production of alumina by the bayer process
GB1509107A (en) Production of phosphine
GB934105A (en) Improvements in or relating to chromic acid manufacture
GB1440679A (en) Process for the production of hydrated nickel sulphate
GB1341351A (en) Recovery of pure-schaeffers salt from crude sulphonation mixtures
GB650341A (en) Method for the production of amido sulphonic acid
US1704909A (en) Manufacture of alkali of high concentration
US2999094A (en) Quinoline sulfonation process
SU241410A1 (en) Method of decomposing aluminate solutions
US2442677A (en) Purification of vitamin

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee