Dibasic lead stearate is primarily used as a stabilizer in the production of polyvinyl chloride (PVC) materials. It helps to prevent the degradation of PVC when exposed to heat and light during processing, ensuring the material remains durable and maintains its properties over time. This chemical is also utilized in the manufacturing of cables and wires, where it enhances the thermal stability and electrical insulation of PVC coatings. Additionally, it finds application in the production of lubricants and greases, where it acts as a thickening agent and improves the consistency and performance of the product. Its ability to provide stability and enhance material properties makes it valuable in various industrial applications.