Octabenzone丨CAS 1843-05-6

Octabenzone is a benzophenone-based ultraviolet absorber extensively used to protect polymers, coatings, and consumer products from UV-induced degradation. It is widely applied in polyolefins, polystyrene, polyurethanes, PVC, and engineering plastics to prevent discoloration, loss of mechanical strength, and surface cracking caused by long-term sunlight exposure. In coatings and paints, it improves weatherability, gloss retention, and color stability, making it useful in automotive, industrial, and outdoor architectural applications. Octabenzone is also used in adhesives, sealants, and packaging films to extend shelf life and maintain product integrity under UV exposure. In textiles and fibers, it helps reduce fading and preserves brightness. Its broad-spectrum UV absorption capability makes it a valuable additive wherever long-lasting durability and protection against sunlight are required.

The benefits of Octabenzone arise from its strong UV absorption, excellent compatibility, and stability across a variety of polymer systems. By efficiently absorbing harmful UV-A and UV-B radiation, it prevents photodegradation, thereby extending the service life and maintaining the appearance of end-use products. Its compatibility with multiple processing methods, including extrusion, molding, and coating applications, allows manufacturers to integrate it into diverse materials without compromising performance. Octabenzone also demonstrates good thermal stability, enabling it to withstand high-temperature processing without significant volatilization or decomposition. This enhances efficiency in large-scale production and ensures consistent product quality. Moreover, its ability to minimize material aging and cracking reduces maintenance and replacement costs, adding economic and environmental value through longer product lifespans.