Used as an antioxidant in plastics, rubber, and fuels to prevent degradation caused by oxidation. It stabilizes polymers during processing and extends service life by protecting against thermal and oxidative breakdown. Commonly found in polyolefins and elastomers to maintain mechanical properties and color stability. Also applied in lubricants and industrial oils to inhibit sludge and varnish formation. Effective in high-temperature environments due to its sterically hindered structure.