3,5-Dinitrobenzoic acid is an organic chemical that is an important corrosion inhibitor and is also used in photography.

This aromatic compound is used by chemists to identify alcohol components in esters and in the fluorometric analysis of creatinine.

[1][2] The nitration can also be started with 3-nitrobenzoic acid, which leads to yields of approximately 98 %.

3,5-Dinitrobenzoic acid finds use in the identification of various organic substances, especially alcohols, by derivatization.

For instance, alcohols can be identified by the melting point of their esters with 3,5-dinitrobenzoic acid.