Antioxidant 168 is a white crystalline powder with no odor, insoluble in water, and easily soluble in organic solvents such as aromatic hydrocarbons and esters. Belonging to hypophosphite ester auxiliary antioxidants, it has excellent thermal stability, low volatility, good hydrolysis resistance, and is not easily discolored or pollutes the product during processing. It can effectively decompose peroxides generated by thermal oxidative aging of polymer materials, and has a significant synergistic effect with hindered phenolic main antioxidants, which can improve the processing stability and long-term aging resistance of materials. Widely used in polyethylene, polypropylene, polystyrene ABS、 Processing and production of polycarbonate, nylon, elastomers, and various plastic and rubber polymer products. Sealed and stored in a cool, dry, and ventilated environment, away from light and moisture, away from heat sources, and prohibited from coexisting with strong oxidants.