Uses:

Iron(III) chloride, generically called ferric chloride, is an industrial scale commodity chemical compound. In industrial application, iron(III) chloride is used in sewage treatment and drinking water production. Iron(III) chloride is necessary for the etching of photogravure plates for printing photographic and fine art images in intaglio and for etching rotogravure cylinders used in the printing industry. Iron(III) chloride is also used in veterinary practice.