Widely used as an antioxidant in polymers, plastics, and rubber to prevent degradation caused by heat, light, and oxygen. It stabilizes materials during processing and extends service life by inhibiting oxidation. Commonly added to polyolefins, such as polyethylene and polypropylene, to maintain mechanical strength and color stability. Also found in adhesives, sealants, and coatings where long-term durability is required. Compatible with other stabilizers, allowing synergistic effects in multi-component additive systems. Used in industrial lubricants and greases to reduce oxidative breakdown under high-temperature conditions. Approved for limited use in food-contact plastics due to low toxicity and high efficiency at small concentrations.