Tetraethylammonium fluoride dihydrate is commonly used as a fluorinating agent in organic synthesis. It facilitates the introduction of fluorine atoms into various organic compounds, which is crucial in the development of pharmaceuticals and agrochemicals. The compound is particularly valued for its ability to enhance the reactivity and selectivity in fluorination reactions. Additionally, it serves as a catalyst in certain organic transformations, improving reaction efficiency and yield. Its application extends to the preparation of specialty chemicals and materials, where precise fluorination is required for desired properties.