FeCl3 – Physical Properties

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Physical Properties

FeCl3 has a molar mass of 162.2 g/mol and a melting point of 300 deg C. Its boiling point is about 315 deg C. It is a solid crystalline salt with the formula FeCl3.

Iron III Chloride (FeCl3) has a +3 oxidation state and is an inorganic compound salt that is often called ferric chloride. It is commonly found in nature as the mineral molysite.

It is a common chemical in the manufacture of several iron salts and as a reagent in the synthesis of dyes, pigments and inks. It is also used in the production of pharmaceutical raw materials, in sewage treatment and as a catalyst in the chlorination reaction of aromatics.

Ferric Chloride is a strong oxidant that has the ability to oxidise copper, zinc and other metals. It also has the ability to redox react with other organic compounds to form a series of complexes.

It corrodes many minerals and bodies of water when applied. It is hygroscopic, so when it becomes dehydrated, it liquefies and forms hydrogen chloride mists in humid air.

In an aqueous solution, it is clear to pale brown with a faintly acidic and corrosive odor. It is soluble in various solvents like methanol, acetone, ether, acetic acid, nitric acid, phosphorus tribromide and liquid sulfur dioxide.

It is used as a flocculating agent for municipal and industrial wastewater treatment, to remove suspended impurities. When dissolved in water, it produces a flock of Fe(OH)3, which adsorbs suspended particles.


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