It is named after the German chemist Georg Tobias.

[1] It is one of several aminonaphthalenesulfonic acids, which are derivatives of naphthalene containing both amine and sulfonic acid functional groups.

It is a white solid, although commercial samples can appear otherwise.

It is prepared via the Bucherer reaction of 2-hydroxynaphthalene-1-sulfonic acid with ammonia and ammonium sulfite.

This article about an organic compound is a stub.