免费无码自慰一区二区三区,亚洲成人精品,91精品国产综合久久香蕉922,超碰aⅴ人人做人人爽,亚洲无吗精品AV九九久久

Detail

4,4'-DichIorodiphenyl sulfone

CAS NO. 80-07-9 EC 201-247-9 UN IMDG
4,4'-DichIorodiphenyl sulfone
Formula:  C12H8Cl2O2S
Assay:  99.5%min
M.P:  146-151℃
Packing:  25kg bag,1FCL=16MT
Capacity:  2000MT/Y
Raw material for engineering plastics poly sulfones, also used for medicine additives.