Dioctyl sebacate (DOS) is a high-performance plasticizer known for its flexibility, low-temperature performance, and resistance to oil and solvents. It is widely used in cable insulation, automotive parts, coatings, and lubricants. In 2025, global production is expanding gradually, with significant output coming from Asia-Pacific and North America. DOS pricing in 2025 has remained stable to moderately bullish. Tight availability of sebacic acid and increasing costs of alcohol feedstocks have led to slight upward movement in prices. Environmental regulations and preferences for sustainable alternatives have also helped sustain demand, allowing producers to maintain healthy margins.