Used as a reagent in the synthesis of heterocyclic compounds, particularly in the preparation of benzimidazoles, which are important in pharmaceuticals and agrochemicals. Commonly employed in analytical chemistry for the detection of nitrites and carbonyl compounds due to its ability to form colored derivatives. Also utilized in the development of sensors and dyes, where its oxidation products contribute to chromogenic responses. Plays a role in polymer chemistry as a cross-linking agent and in the production of specialty resins with enhanced thermal stability.