Dimethylpropylchlorosilane is primarily used as a silane coupling agent in the production of silicone polymers and resins. It is applied to modify surfaces, enhancing adhesion between organic and inorganic materials, making it valuable in coatings, adhesives, and sealants. In the electronics industry, it serves as a surface treatment for semiconductors and optical fibers, improving performance and durability. Additionally, it is utilized in the synthesis of specialty chemicals and as an intermediate in organic synthesis for pharmaceuticals and agrochemicals. Its ability to introduce hydrophobic properties makes it suitable for water repellent treatments in textiles and construction materials.