This standard specifies a method for the determination of antioxidant D in Pressure sensitive adhesives by high performance liquid chromatograph. It is suitable for the determination of antioxidant D in Pressure sensitive adhesives. In the method summary, the sample is sonically dissolved with ethyl acetate, A drunk settling polymer, Supernatant liquid is infiltrated, and then determined with High Performance Liquid Chromatograph, external standard method is used for quantification, and liquid chromatograph - Mass spectrometry is used for positive confirmation. Reagents and materials include methanol, ethyl acetate, acetonitrile, antioxidant D, standard stock solution, standard working solution, organic phase filter membrane, etc. Instruments and equipment include Liquid Chromatography (LC), Analytical Balance, Centrifuge, ultrasonic cleaner, vortex mixer, Glass vials, and more.