Ferric chloride hexahydrate is a hydrate that is the hexahydrate form of iron trichloride. It has a role as an astringent and a Lewis acid. It is a hydrate, an inorganic chloride and an iron coordination entity.
Ferric chloride hexahydrate can be obtained from crystallization of iron(III) chloride from water. Three-dimensional single-crystal X-ray-diffraction studies of its crystal structure suggest its crystals are monoclinic and C2h3-2/m space group