Butyltin Chloride Dihydroxide is primarily used as a stabilizer in the production of polyvinyl chloride (PVC) materials. It helps prevent the degradation of PVC when exposed to heat and light, ensuring the material maintains its integrity and performance over time. It is also employed as a catalyst in the production of polymers such as polyurethane and polyesters, improving the physical properties of plastic products. This chemical is used in the formulation of coatings and paints, where it enhances durability and resistance to environmental factors. Additionally, it finds application in certain industrial processes as a catalyst or intermediate in the synthesis of other organotin compounds. Its effectiveness in these roles makes it valuable in manufacturing and material science.