Antioxidant 245

Product Overview

Antioxidant 245 represents a class of high-performance sterically hindered phenolic antioxidants designed specifically for the stabilization of organic polymers. This advanced chemical additive plays a critical role in protecting polymer matrices against thermo-oxidative degradation, ensuring longevity and performance stability during both manufacturing processes and end-use applications. As a primary antioxidant, it effectively scavenges free radicals generated during heat processing, thereby preventing chain scission and cross-linking that can compromise material integrity.

The chemical structure of Antioxidant 245, known systematically as Triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, provides exceptional compatibility with a wide range of resin systems. Its low volatility characteristics make it particularly suitable for high-temperature processing environments where other antioxidants might sublime or degrade. Furthermore, the compound exhibits superior color stability, preventing yellowing in clear or light-colored polymer products, which is essential for aesthetic applications in consumer goods and automotive components.

Technical Specifications

Industrial Applications

In terms of industrial applications, this specialty chemical is highly effective across multiple polymer families. It is extensively used in styrenics, synthetic rubbers, and polyoxymethylene (POM) homo and copolymers. The additive is also a preferred choice for polyurethanes, polyamides, polyesters, and modified blow styrene (MBS). In the PVC industry, Antioxidant 245 serves as a chain stopper during manufacturing and significantly reduces fish eyes in flexible PVC applications, enhancing the surface quality of finished films and sheets.

One of the key advantages of incorporating this antioxidant into formulations is its synergistic potential. When used in combination with thioester antioxidants, it exhibits enhanced protective effects, offering comprehensive stabilization against both thermal and oxidative stress. For outdoor applications requiring light stability, it can be effectively paired with benzotriazoles or hindered amine light stabilizers (HALS). This versatility allows formulators to tailor stabilization packages to meet specific performance benchmarks and regulatory requirements.

Quality And Handling

Quality control is paramount in the production of Antioxidant 245. Our manufacturing process ensures high purity levels, typically exceeding 97 percent assay content. Physical characteristics such as melting point range between 76 and 80 degrees Celsius, with minimal ash content and volatile matter. Transmittance values at 425 nanometers and 500 nanometers are maintained above 95 percent and 97 percent respectively, guaranteeing optical clarity in sensitive applications. Each batch is accompanied by a Certificate of Analysis (COA) to verify compliance with specifications.

Proper handling and storage are essential to maintain product efficacy. The material should be kept in tightly closed containers to prevent moisture absorption and contamination. Storage areas must be cool and dry, away from direct sunlight and heat sources. We offer flexible packaging options including 25 kilogram cartons and 50 kilogram drums to suit various logistical needs. As a global manufacturer, we provide reliable supply chains and competitive bulk pricing for industrial clients seeking consistent quality and technical support.