This product is white crystal powder. Its molecular weight is 646.94 while melting point is 183-187ºC. It can be dissolved in gasoline, benzene and toluene. The specific gravity is 1.03(at 20ºC). This product is an secondary antioxidant, used together with main antioxidant(such as 1010 and 1076) as processing stabilizer in polyethylene , polypropylene, polystyrene and polyamide. It can obviously improve polymer's property of processing stability. It will be more effective to use this product together with thioester antioxidants in which long-term stability is strictly requireed. This product hardly can be colored and does not make pollution with good performance of volatilization resistance. The general using rate is 0.05-0.5%.