Description: 
Name: Solid Polymer Ferric Sulphate (SPFS)
Molecular formula: [Fe2(OH)n(SO4)3-n/2]m
Appearance: Light yellow /Brown amorphous powder. 
Polyferric sulfate(PFS) is a high-efficiency inorganic coagulating agent, chemically inactive, soluble in water. In water treatment, it hydrolysis to many electropositive multinucleated ion which neutralized negative charge of colloidal particle in water and adsorption colloidal particle, through adhesion, bridges, cross-linking made particles flocculation and sedimentation. 
Application: 
Polyferric sulfate(PFS) Mainly used on various industrial effluent treatment plants, such as electroplating wastewater, paper-making wastewater, municipal wastewater, oily wastewater, dye wastewater and chemical wastewater treatment and so on. 
Advantage: 
Compared with other inorganic flocculant has the following characteristics: 
1) New, high quality and efficient inorganic polymer coagulant
2) Has good coagulation function with thick flocs and fast sedimentation
3) Has an excellent purifying effect
4) Safe, reliable, nonpoisonous and harmless: Doesn't contain any harmful substances such as
Aluminum, chlorine, heavy metal ions, and water phase transference of iron ions
5) Can be used in discolouring, dehydrating, deodorizing, degreasing, sterilizing as well as discarding heavy metal iron, radioactive substance and carcinogens in the water, and eliminate COD, BOD, and color
6) Can treat water with PH from 4 to 11, (the optimum pH is 6-9), 
7) PH barely changes after treatment, and has little corrosiveness effect to the equipment. 

8) Has very good effect in purifying the river water with algae, low temperature and low turbidity, and slightly contaminated 9) Has a better effect in purifying the high turbidity river water. 

Item	PFS solid	PFS solution
Fe3+, % , ≥	19-21	11-12
Reducing substances (counted by Fe2+), % , ≤	0.15	0.1
Basicity, %	9.0-14.0	8.0-16.0
PH (1% aq. solution)	2.0-3.0	2.0-3.0
As, % , ≤	0.0008	0.0001
Pb , % , ≤	0.0015	0.0005
Non-soluble, % , ≤	0.5	0.4