Characteristic

Iron(III) chloride is the inorganic compound with the formula (FeCl₃). Also called ferric chloride, it is a common compound of iron in the +3 oxidation state.

Chemical formula：FeCl₃

Molar mass ：162.204 g/mol (anhydrous)

                       270.295 g/mol (hexahydrate)

Appearance：Green-black by reflected light; purple-red by transmitted light; yellow solid as hexahydrate; brown as aq. solution

Odor：Slight HCl

Density： 2.90 g/cm3 (anhydrous)

                1.82 g/cm3 (hexahydrate)

Melting point：307.6 °C (585.7 °F; 580.8 K) (anhydrous)

                          37 °C (99 °F; 310 K) (hexahydrate)

Boiling point ：316 °C (601 °F; 589 K) (anhydrous, decomposes)

                         280 °C (536 °F; 553 K) (hexahydrate, decomposes)

Solubility in water： 912 g/L (anh. or hexahydrate, 25 °C)

Solubility in Acetone Methanol  Ethanol   Diethyl ether：630 g/L (18 °C) Highly soluble  830 g/L  Highly soluble

Magnetic susceptibility (χ)：+13,450·10−6 cm3/mol

Viscosity：12 cP (40% solution)

Crystal structure：Hexagonal, hR24

Application

Mainly used for metal etching and sewage treatment, including etching of copper, stainless steel, aluminum and other materials. For raw water treatment with low oil content, it has the advantages of good effect and low price, but brings the disadvantages of water yellowing.Also used for printing and dyeing roller engraving, electronic industry circuit board and fluorescent digital cylinder production.

Mainly used for metal etching and sewage treatment, including etching of copper, stainless steel, aluminum and other materials. For raw water treatment with low oil content, it has the advantages of good effect and low price, but brings the disadvantages of water yellowing.Also used for printing and dyeing roller engraving, electronic industry circuit board and fluorescent digital cylinder production.