JPS5738764A - Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid - Google Patents

Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid

Info

Publication number
JPS5738764A
JPS5738764A JP11442680A JP11442680A JPS5738764A JP S5738764 A JPS5738764 A JP S5738764A JP 11442680 A JP11442680 A JP 11442680A JP 11442680 A JP11442680 A JP 11442680A JP S5738764 A JPS5738764 A JP S5738764A
Authority
JP
Japan
Prior art keywords
nitrotoluene
molybdenum
give
sulfonic acid
added
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
JP11442680A
Other languages
Japanese (ja)
Inventor
Katsunobu Sato
Kazumi Yoshikoshi
Tadao Kinoshita
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP11442680A priority Critical patent/JPS5738764A/en
Publication of JPS5738764A publication Critical patent/JPS5738764A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve the oxidation yield remarkably and obtain the titled compound useful as raw material for a fluorescent brightening agent, etc., by oxidizing a 4-nitrotoluene-2-sulfonic acid in an alkaline aqueous solution in the presence of a mixed catalyst of molybdenum, etc. with manganese sulfate.
CONSTITUTION: A 4-nitrotoluene-2-sulfonic acid, e.g. sodium 4-nitrotoluene-2- sulfonate, is dissolved in water, and sodium hydroxide is added thereto to give an alkaline aqueous solution. A mixed catalyst of one or more types of molybdenum, barium, iron, nickel and cobalt compounds, e.g. molybdenum trioxide, with manganese sulfate, is added to the solution, and the oxidation reaction is carried out at 30W80°C, preferably 45W70°C, while blowing air thereinto to give the aimed compound.
COPYRIGHT: (C)1982,JPO&Japio
JP11442680A 1980-08-19 1980-08-19 Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid Pending JPS5738764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11442680A JPS5738764A (en) 1980-08-19 1980-08-19 Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11442680A JPS5738764A (en) 1980-08-19 1980-08-19 Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid

Publications (1)

Publication Number Publication Date
JPS5738764A true JPS5738764A (en) 1982-03-03

Family

ID=14637410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11442680A Pending JPS5738764A (en) 1980-08-19 1980-08-19 Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid

Country Status (1)

Country Link
JP (1) JPS5738764A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680146A (en) * 1985-05-31 1987-07-14 Bayer Aktiengesellschaft Process for the preparation of 4,4'-dinitrostilbene-2,2'-disulphonic acid salts
CN1052475C (en) * 1993-09-08 2000-05-17 拜尔公司 Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid
CN102351748A (en) * 2011-08-22 2012-02-15 山西阳煤丰喜肥业(集团)有限责任公司 Preparation method for DNS (4,4'-dinitrostilbene-2,2'-disulphonic acid) sodium salt in DSD (4,4'-diaminodiphenylethylene-2,2'-disulfonic acid) acid production process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680146A (en) * 1985-05-31 1987-07-14 Bayer Aktiengesellschaft Process for the preparation of 4,4'-dinitrostilbene-2,2'-disulphonic acid salts
CN1052475C (en) * 1993-09-08 2000-05-17 拜尔公司 Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid
CN102351748A (en) * 2011-08-22 2012-02-15 山西阳煤丰喜肥业(集团)有限责任公司 Preparation method for DNS (4,4'-dinitrostilbene-2,2'-disulphonic acid) sodium salt in DSD (4,4'-diaminodiphenylethylene-2,2'-disulfonic acid) acid production process

Similar Documents

Publication Publication Date Title
GB1526549A (en) Soda-lime glass manufacture
JPS5561935A (en) Catalyst composition for production of ethylene oxide
GB1349582A (en) Process for oxidation of dihydroquinacridones to quinacridones
GB1389621A (en) Salts of 3-hydroxy-2-hydroxy-methyl-propanesulphonic acid-1 and a process for their preparation
JPS56802A (en) Preparation of hydroxypropyl-cellulose
JPS5738764A (en) Preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid
JPS574978A (en) Preparation of benzothiazole-2-sulfonamide compound
JPS55139375A (en) Production of hydroxyflavan
KR850006870A (en) New manufacturing method of magaldrate
ES2069769T3 (en) PROCEDURE TO OBTAIN THE PRECURSOR OF A PRECIPITATED CATALYST FOR AMMONIA SYNTHESIS.
JPS55149247A (en) Preparation of aromatic hydroperoxide
JPS5517324A (en) Preparation of thiophosphoric acid ester
JPS5210226A (en) Process for preparation of aromatic hydroxy compound
JPS57197270A (en) Production of 2-hydroxyquinoxaline derivative
JPS5735559A (en) Preparation of dihydroxydiphenylsulfone
JPS5758661A (en) Production of p-nitrophenyl-beta-hydroxyethylsulfide
JPS5616464A (en) Production of alpha-methylthio-4-hydroxyphenylacetic acid
JPS5669231A (en) Preparation of needlelike goethite
EP0111569A4 (en) Hydroxyalkanesulfonic acids and their derivatives, and process for their preparation.
JPS567752A (en) Preparation of 2- sulfophenylhydrazino -butane diacid derivative
JPS5795959A (en) Preparation of dialkyl disulfide
JPS5777664A (en) Preparation of dihydroxydiphenyl sulfone
JPS57209241A (en) Preparation of 2,2'-dihydroxydiphenyl
JPS5545667A (en) Production of p-methylacetophenone
JPS5686458A (en) Manufacture of alkaline cell