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.
- Also called iron trichloride, iron perchloride.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ferric chloride in a sentence
It gave a bluish-black color with impure ferrous sulphate and a dark color with ferric chloride.
An alcoholic solution of this substance gave a dark color with ferric chloride and a light colored precipitate with lead acetate.
A small portion of the tar residue in alcoholic solution gave a color reaction with ferric chloride.
The filtrate did not give any color with ferric chloride, but it reduced Fehling solution.
This solution was yellow and gave a reaction with ferric chloride similar to that of gallic acid.