azo benzoic

[Eng. azo ( te ), and benzoic (see def.).] Pertaining to nitrogen, and also to gum benzoin, a resin produced from Styrax benzoin, a tree from the Malay archipelago. azo benzoic acid. NC6H4.CO.OH Chem: NC6H4.CO.OH. Obtained by the action of sodium amalgam and water on nitro-benzoic acid. A yellow solid, almost insoluble in alcohol, ether, or water; it forms sparingly soluble salts. The American Dictionary and Cyclopedia 398 A