It is used for sewage treatment, circuit board etching, stainless steel corrosion and mordant. It is a good substitute for solid ferric chloride. Among them, HPFCS high-purity type is used for high-demand cleaning and etching in the electronics industry.
Liquid ferric chloride is an efficient and cheap flocculant for the treatment of urban sewage and industrial wastewater. It has significant precipitation of heavy metals and sulfides, decolorization, deodorization, degreasing, sterilization, dephosphorization, and reducing effluent COD and BOD.