This product is white powder.Its molecular weight is 1178.65 while melting point is 110-125ºC. It can be dissolved in solvents such as benzene, acetone and chloroform. This product is a kind of general high-molecular phenolic antixodants. It has excellent proteching effects for polyolefin plastics,suitable for POM and ABS resin and petroleum products. It can be used as antioxidant and heat stabilizer for natural rubber and synthetic rubber (except for fluo-rubber), no discoloring and pollution. It possesses good property of low volatilization, abstraction resistance and superior heat stability. It appears perfect synergetic effects to obviously improve the heat-resistance stability of resin when the product is used together with DLTDP and DSTDP. The general using rate is 0.01-0.5%.