2-Bromochlorobenzene CAS 694-80-4 mainly used to synthesize the third monomer of cationic dyeable polyester (CDP), so that CDP polyester fiber has good affinity for cationic fuel The chemical properties of the CDP fiber can be dyed under normal pressure. After dyeing, the color is bright, the color spectrum is complete, the color fastness is high, it is not easy to fade, and it has good antistatic, moisture absorption, anti-pilling and breathability, and is comfortable to wear.