4,4-Dichlorodiphenylsulfone

4,4-Dichlorodiphenylsulfone (CAS 80-07-9, molecular formula C12H8O2Cl2S, MW 287.16) is a functional-material intermediate manufactured directly by Hebei Jianxin Chemical Co., Ltd. to enterprise standard, appearing as a white crystalline powder with a minimum purity of 99.5%, melting point above 148°C, and loss on drying below 0.5%. It is used in synthesizing engineering plastics such as polysulfone, polyethersulfone, and polyetheretherketone, as well as dyes, polymers, and pharmaceutical intermediates and additives, packaged in 20kg cardboard drums and sold across North America, Central/South America, Europe, Australasia, Asia, the Middle East, and Africa.