Collidinic acid[1][2] (pyridine-2,4,6-tricarboxylic acid) is an organic compound that belongs to the heterocycles (more precisely the heteroaromatics).

It belongs to the group of pyridinetricarboxylic acids and consists of a pyridine ring which carries three carboxy groups in the 2-, 4- and 6-positions.

The compound can be obtained from the oxidation of 2,4,6-collidine by potassium permanganate.

[3] Collidinic acid can be used in the spectrophotometric determination of iron.

This article about an organic compound is a stub.