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ferric chloride

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noun Chemistry.
  1. a 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.

Origin of ferric chloride

First recorded in 1890–95
Also called iron trichloride, iron perchloride.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018