• July 15, 2024

Ferric Chloride


In industrial application, iron(III) chloride is used in sewage treatment and drinking water production. In this application, FeCl3 in slightly basic water reacts with the hydroxide ion to form a floc of iron(III) hydroxide, or more precisely formulated as FeO(OH)-, that can remove suspended materials.

Another important application of iron(III) chloride is etching copper in two-step redox reaction to copper(I) chloride and then to copper(II) chloride in the production of printed circuit boards

Iron(III) chloride is used as catalyst for the reaction of ethylene with chlorine, forming ethylene dichloride (1,2-dichloroethane), an important commodity chemical, which is mainly used for the industrial production of vinyl chloride, the monomer for making PVC.


1AppearanceA Clear dark Red/Brown liquid
2FeCl3 Concentration 42-43 % (min)
3Ferrous Salt As Fecl20.10 % max
4Free Acid as HCL0.02%
6Specific Gravity @25deg.1.42 – 1.46
7Viscosity12.1 centi. For a 42 % solution
8Crystallization42 % FeCl3-25deg f
9Molecular Weight162.5
10Melting Point282 deg. C
11SolubilityMiscible in water

You cannot copy content of this page