GB462664A - Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid - Google Patents

Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid

Info

Publication number
GB462664A
GB462664A GB2495635A GB2495635A GB462664A GB 462664 A GB462664 A GB 462664A GB 2495635 A GB2495635 A GB 2495635A GB 2495635 A GB2495635 A GB 2495635A GB 462664 A GB462664 A GB 462664A
Authority
GB
United Kingdom
Prior art keywords
dimethylnaphthalene
sulphuric acid
acid
sulphochloride
treating
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
GB2495635A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2495635A priority Critical patent/GB462664A/en
Publication of GB462664A publication Critical patent/GB462664A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof

Landscapes

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

Abstract

2 : 6 - Dimethylnaphthalene-8-sulphonic acid is prepared by treating 2 : 6-dimethylnaphthalene with a sulphonating agent in the presence of an indifferent solvent at a temperature up to about 50 DEG C. Solvents specified are o-dichlorobenzene, trichlorobenzene, trichloroethylene, chloroform, carbon tetrachloride, tetrachlorethane, benzine and nitrobenzene. The product, which is a dyestuff intermediate, may be converted into 2 : 6-dimethyl-8-naphthol by melting with caustic alkali, or into the sulphochloride by treating its sodium salt with phosphorus pentachloride; from the sulphochloride, the sulphamide may be obtained by reaction with ammonia. Examples are given of the sulphonation with chlorosulphonic acid, sulphuric acid monohydrate, concentrated sulphuric acid and fuming sulphuric acid.
GB2495635A 1935-09-07 1935-09-07 Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid Expired GB462664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2495635A GB462664A (en) 1935-09-07 1935-09-07 Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2495635A GB462664A (en) 1935-09-07 1935-09-07 Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid

Publications (1)

Publication Number Publication Date
GB462664A true GB462664A (en) 1937-03-08

Family

ID=10219934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2495635A Expired GB462664A (en) 1935-09-07 1935-09-07 Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid

Country Status (1)

Country Link
GB (1) GB462664A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102675914A (en) * 2011-03-10 2012-09-19 天津聚贤投资有限公司 Method for replacing 2-nitroethylbenzene as solvent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102675914A (en) * 2011-03-10 2012-09-19 天津聚贤投资有限公司 Method for replacing 2-nitroethylbenzene as solvent

Similar Documents

Publication Publication Date Title
US2018792A (en) Process for the manufacture of hydroxypyrene
GB560164A (en) Improvements relating to the manufacture of dyestuffs of the anthraquinone series
GB462664A (en) Manufacture of 2:6-dimethylnaphthalene-8-sulphonic acid
US3821262A (en) Process for the production of anthraquinone derivatives chlorinated in alpha-positions
US2222482A (en) Sulphur dyes
GB461894A (en) Manufacture of 2:6-dimethylnaphthalene-1-sulphonic acid
US1841997A (en) 1-aminoanthraquinone-2-sulphonic acid
GB712771A (en) Process for the preparation of intermediate products for dyestuffs of the anthraquinone series
US948204A (en) Indanthrene monosulfonic acid and process of making same.
GB236795A (en) Manufacture of quinonoid derivatives of 2:1-naphthophenothiazine
GB203533A (en) Improvements in the manufacture and production of dyestuffs and intermediate products therefor
US1721317A (en) Process of making anthraquinone-disulphonic acid
GB733458A (en) Anthraquinone dyestuffs
GB462337A (en) Manufacture of 2:6-dimethylnapththalene-7-sulphonic acid
US1496084A (en) Process for preparation of dyestuffs which consists in treating dinaphthylenethiophene by sulphuric acid, etc.
SU40476A1 (en) The method of obtaining sulfur dyes
US746405A (en) Purpurin-alpha-sulfonic acid.
SU48329A1 (en) The method of obtaining 2: 6-naphtholsulfonate and its derivatives, containing the substituents in position 3 and 7
GB186515A (en) The manufacture of 1.4-naphthol sulphonic acid
GB417794A (en) Process for the manufacture of carbazole compounds
GB276766A (en) Improvements in the manufacture of benzanthrone derivatives
GB284035A (en) Improvements in and relating to the production of benzanthrones and their derivatives
GB987965A (en) New vat dyestuffs and processes for their manufacture
GB417423A (en) Manufacture of cyclohexylphenols and intermediate products
GB331537A (en) Improvements in and relating to the production of anthraquinone derivatives