4,4’-Diaminodiphenylsulfone

4,4'-Diaminodiphenylsulfone (CAS 80-08-0, molecular formula C12H12N2O2S) is a functional-material intermediate manufactured directly by Hebei Jianxin Chemical Co., Ltd. to enterprise standard, appearing as a white crystal or powder with a minimum content of 99.5% (HPLC), melting point above 177°C, and loss on drying below 0.5%. It is primarily used to synthesize polysulfone amide resin and related polymers, packaged in 25kg cardboard drums, and sold across North America, Central/South America, Europe, Australasia, Asia, the Middle East, and Africa.