Process for the production of 2-amino-1-naphthalenesulfonic acid

Details Process for the production of 2-amino-1-naphthalenesulfonic acid Process for the production of 2-amino-1-naphthalenesulfonic acid

1983-12-07

1985-04-09

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260509, C07C14360

Patent

active

045101000

ABSTRACT:
The invention relates to an improved process for the production of 2-amino-1-naphthalenesulfonic acid (Tobias acid). This improved process makes it possible to obtain Tobias acid which has only a very low content of 2-aminonaphthalene and in high space-time yield. The process starts from 2-hydroxynaphthalene and comprises the following main reaction steps:

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