Metanilic Acid

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Metanilic Acid

 

(m-aminobenzenesulfonic acid), colorless crystals that decompose without fusion upon heating. It is poorly soluble in cold water and insoluble in alcohol. Conversion into m-aminophenol upon fusion with NaOH at 280°C is an important property of metanilic acid.

Metanilic acid is prepared industrially from nitrobenzene by sulfonation and subsequent reduction. It is used in the manufacture of synthetic dyes-for example, azo dyes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.