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WordReference Random House Unabridged Dictionary of American English © 2024fer′ric chlo′ride, [Chem.]- Chemistrya compound that in its anhydrous form, FeCl3, occurs as a black-brown, water-soluble solid;
in its hydrated form, FeCl3·xH2O, it occurs in orange-yellow, deliquescent crystals: used chiefly in engraving, for deodorizing sewage, as a mordant, and in medicine as an astringent and styptic. Also called iron trichloride, iron perchloride.
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