Irganox 1010 and Irganox 1076 are both BASF hindered phenolic primary antioxidants used to protect polyolefins and other polymers from thermo-oxidative degradation. They are chemically related but differ in structure, which changes how they behave.
The key difference
- Irganox 1010 (CAS 6683-19-8) is a tetra-functional, high-molecular-weight phenolic (~1178 g/mol). Its low volatility and high active content make it ideal for demanding, high-temperature and long-service-life applications.
- Irganox 1076 (CAS 2082-79-3) is a mono-functional, lower-molecular-weight phenolic (~531 g/mol). It is more mobile and highly compatible in polyolefins, waxes and adhesives, and is often chosen for films, thin sections and cost-sensitive formulations.
How to choose
- High-temperature, long-life, thick parts → Irganox 1010.
- Films, waxes, hot-melt adhesives, good compatibility/lower cost per part → Irganox 1076.
- Either one is usually paired with Irgafos 168 (phosphite) for melt protection and colour.
Not sure which fits your polymer and process? HexaChem's technical team can recommend the right antioxidant package and supply samples in Vietnam.