Used as a surface treatment agent to provide water and oil repellency in textiles, coatings, and paper products. Commonly applied in the formulation of specialty coatings for electronics and optical devices due to its low surface energy. Also utilized in research settings to modify surfaces for hydrophobic behavior, such as in microfluidics or lab-on-a-chip systems. Its long perfluorinated chain makes it effective in creating durable, non-wetting layers that resist degradation under harsh conditions.