Description

Description

Dinonyl Phenyl Phosphite (CAS No. 2065-28-3) is a high-purity organophosphorus compound with the molecular formula C₂₄H₄₃O₃P. This specialty chemical serves as a highly effective stabilizer and antioxidant in polymer formulations, particularly in PVC, polyolefins, and synthetic rubbers. Its unique molecular structure, featuring a phenyl group flanked by two nonyl chains, provides exceptional hydrolytic stability and compatibility with a wide range of polymer systems. Our product is synthesized under strict quality control measures to ensure consistent performance, with typical purity levels exceeding 98%. The liquid form (clear to pale yellow viscous liquid) offers easy handling and incorporation into masterbatches or direct polymer processing. Suitable for research and industrial applications requiring advanced stabilization against thermal degradation and oxidative processes.

Application

Dinonyl phenyl phosphite is primarily employed as a secondary antioxidant in polymer stabilization systems, where it functions synergistically with primary antioxidants to prevent thermal and oxidative degradation. The compound finds particular utility in PVC stabilization, where it acts as a chelating agent for metal impurities while improving color retention. In polyolefin applications, it serves as a processing stabilizer during high-temperature extrusion and molding operations. Researchers also utilize this phosphite derivative in studies of polymer degradation mechanisms and stabilization technologies.

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