The application segmentation of the Phosphorus Stabilizer market is anchored by three primary end‑uses: polyvinyl chloride (PVC), polyurethane (PU), and other polymers. PVC remains the largest consumer, representing approximately 55 % of total sales, driven by its extensive use in construction, automotive, and electrical cable sectors where long‑term thermal stability is essential. Polyurethane, accounting for 30 % of the market, benefits from the stabilizer’s ability to mitigate degradation in flexible foams and coatings, supporting growth in furniture and automotive interior applications. The remaining 15 % is distributed across niche polymers such as ABS, PET, and specialty elastomers, where phosphorus stabilizers are employed to meet specific flame‑retardancy or processing requirements. This application‑focused breakdown clarifies how each segment contributes to overall market size and informs strategic investment across product lines.