Addovate ThermoStab

Addovate ThermoStab (CAS 73912-21-7) is a phosphorus-based antioxidant and thermal stabilizer used to protect polymers and lubricant systems from oxidative and heat-induced degradation during processing and service life.

It functions as a hydroxy-functional phosphite, intercepting peroxy radicals and decomposing hydroperoxides before they cause molecular chain breakdown. In plastics processing, it is incorporated into polyolefins and resins.

It is used in engineering thermoplastics and compounded resins to prevent discoloration and molecular weight loss during high-temperature extrusion or injection molding. This ensures the structural integrity of the final product.

Lubricant formulators use it to extend the oxidative stability of industrial and automotive gear oils, hydraulic fluids, and greases operating under elevated thermal loads. This helps maintain performance in harsh environments.

Automotive component manufacturers specify it in underhood plastic parts and rubber-polymer blends where sustained heat exposure is a design requirement. It provides long-term durability for critical vehicle systems.

It is also evaluated in masterbatch and concentrate production, where stabilizer loading must remain effective through multiple processing passes. This makes it a versatile choice for complex manufacturing workflows.

Addovate ThermoStab is typically supplied as a white to off-white powder or solid. Technical-grade material is the standard commercial form, with purity specifications aligned to polymer and lubricant additive industry requirements.

Packaging is generally available in bags or drums suited to industrial-scale procurement volumes. This ensures efficient handling and storage for large-scale chemical manufacturing and distribution operations.