JPS5756450A - Preparation of naphthalenesulfonic acid - Google Patents

Preparation of naphthalenesulfonic acid

Info

Publication number
JPS5756450A
JPS5756450A JP13203080A JP13203080A JPS5756450A JP S5756450 A JPS5756450 A JP S5756450A JP 13203080 A JP13203080 A JP 13203080A JP 13203080 A JP13203080 A JP 13203080A JP S5756450 A JPS5756450 A JP S5756450A
Authority
JP
Japan
Prior art keywords
naphthalene
solvent
sulfonation
high yield
decalin
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
JP13203080A
Other languages
Japanese (ja)
Inventor
Norio Kodera
Fujio Masuko
Hide Honmaru
Hironari Itoi
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 JP13203080A priority Critical patent/JPS5756450A/en
Publication of JPS5756450A publication Critical patent/JPS5756450A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain the titled compound useful as a raw material for naphthol by a simple operation in high yield, by sulfonating naphthalene wth a sulfonating agent in the presence of a specific organic solvent, recovering unreacted naphthalene in high yield, and reusing the solvent.
CONSTITUTION: Naphthalene is sulfonated with a sulfonating agent (e.g., sulfuric acid, fuming nitric acid, sufuric anhydride, etc.) to give naphthalenesulfonic acid. In the reaction, sulfonation is carried out in the presence of one or more organic solvents (e.g., methyldecalin, ethyldecalin, dimethyldecalin, etc.) selected from the group consisting of decalin, lower alkyl substituted decalin, and liquid paraffin. The solvent is insert and has no influence on sulfonation itself, capable of recovering ureacted naphthalene easily, and being used in the following sulfonation by recycling it. Usually the amount of the solvent is 0.1W5 times, preferably 0.3W2 times as much as that of naphthalene.
COPYRIGHT: (C)1982,JPO&Japio
JP13203080A 1980-09-22 1980-09-22 Preparation of naphthalenesulfonic acid Pending JPS5756450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13203080A JPS5756450A (en) 1980-09-22 1980-09-22 Preparation of naphthalenesulfonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13203080A JPS5756450A (en) 1980-09-22 1980-09-22 Preparation of naphthalenesulfonic acid

Publications (1)

Publication Number Publication Date
JPS5756450A true JPS5756450A (en) 1982-04-05

Family

ID=15071850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13203080A Pending JPS5756450A (en) 1980-09-22 1980-09-22 Preparation of naphthalenesulfonic acid

Country Status (1)

Country Link
JP (1) JPS5756450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108822006A (en) * 2018-05-31 2018-11-16 山西豪仑科化工有限公司 A kind of naphthalene sulfonation continuous reaction process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108822006A (en) * 2018-05-31 2018-11-16 山西豪仑科化工有限公司 A kind of naphthalene sulfonation continuous reaction process

Similar Documents

Publication Publication Date Title
ES468304A2 (en) Improvements introduced in the purpose of pat.principal 432,342 by procedure for preparing detergent compositions based on ftalocianin of sulfonated cinc (Machine-translation by Google Translate, not legally binding)
GB1183447A (en)
JPS54163524A (en) Production of high-purity 2-acrylamide-2- methylpropanesulfonic acid
JPS5756450A (en) Preparation of naphthalenesulfonic acid
JPS5756451A (en) Preparation of beta-naphthalenesulfonic acid
JPS5344528A (en) Separation of dihalogenobenzenes
JPS52106819A (en) Sulfonation
GB1519913A (en) Purification of naphthalene
ES8106750A1 (en) Process for the preparation of concentrated solutions of metal complex dyestuffs free from sulfonic groups.
JPS5777663A (en) Preparation of 1-amino-4-bromoanthraquinone-2-sulfonic acid
DK0430352T3 (en) Process for the Preparation of Paraffin Sulfonic Acids
JPS5640619A (en) Production of octadiene
JPS5498738A (en) Method of sulfonation
JPS52125138A (en) Preparation of aromatice aldehydes
JPS5677254A (en) Preparation of naphthalene-2,7-disulfonic acid
JPS5557554A (en) Preparation of alkylbenzensulfonic acid
JPS56100855A (en) Manufacture of dichromic dye
JPS56103157A (en) Sulfonyl nitrite and its preparation
JPS54141748A (en) Preparation of o-trifluoromethylbenzoic acid
JPS5334765A (en) Isolation of 1,5-dinitroanthraquinone
JPS5540647A (en) Production of 1,3,6-naphthalenetrisulfonic acid
JPS53135962A (en) Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone
JPS5579359A (en) Preparation of ether sulfonate
JPS52136134A (en) Preparation of #-phenylenediamine
JPS55129237A (en) Preparation of 4,4'-dihydroxydiphenyl ether