Polyferric sulfate is a high-performance inorganic polymer coagulant, appearing as a light yellow amorphous powdery solid. It is highly soluble in water, with a 10% (by mass) aqueous solution forming a reddish-brown transparent liquid, and is hygroscopic. Polyferric sulfate is widely used in the purification treatment of drinking water, industrial water, various industrial wastewater, urban sewage, and sludge dewatering.