Nonadecafluorononyl bromide is primarily used in the synthesis of fluorinated surfactants and polymers, which are essential in creating water- and oil-repellent coatings for textiles, paper, and other materials. Its application extends to the production of firefighting foams, where its ability to lower surface tension enhances foam effectiveness in extinguishing hydrocarbon-based fires. Additionally, it serves as a key intermediate in the development of specialized fluorochemicals used in the electronics industry for coating components to provide insulation and resistance to harsh environments. The compound is also utilized in research and development for creating advanced materials with unique hydrophobic and oleophobic properties.