Benzotriazole`s applications: Benzotriazole is a complexing agent and as such is a useful corrosion inhibitor, e. G. For silver protection in dishwashing detergents and an anti-fog agent in photographic development. Aircraft deicer and anti-icer fluid contain benzotriazole. Benzotriazole derivatives are found in pharmaceuticals such as antifungal, antibacterial, and anthelmintic drugs.