1. In mineralogy, native vitriol is a substance of a grayish or yellowish white color, apple green, or sky blue, and when decomposed, covered with an ochery crust. It occurs in masses, disseminated, stalactical, or capillary. Externally, it is dull and rough; internally, it is more or less shining, with a vitreous silky structure. It is called by manufacturers copperas, a name derived from the flower or efflorescence of copper. This substance is seem only in cabinets.
2. In chimistry, a combination of the acid of sulphur with any metallic substance; but chiefly green vitriol or sulphate of iron; blue vitriol or sulphate of copper, and white vitriol or sulphate of zink.
3. All metals may be converted into vitriols, by dissolving them with acid spirits, and suffering them to stand and crystallize.
1. A sulphate of any one of certain metals, as copper, iron, zinc, cobalt. So called on account of the glassy appearance or luster.
2. Sulphuric acid; -- called also oil of vitriol. So called because first made by the distillation of green vitriol. See Sulphuric acid, under Sulphuric.
VITRIOL, a name formerly and sometimes still given to sulphuric acid and to certain sulphates (see Sulphur, vol. xxii. p. 636). Oil of vitriol is concentrated sulphuric acid. Blue vitriol is sulphate of copper; green vitriol, sulphate of iron (copperas, ferrous sulphate); and white vitriol, sulphate of zinc.
9th ed. Encyclopædia Britannica, vol. 24, p. 265 [48 words — estimated reading time: 1 minute]
To convert, as sulphur in any compound, into sulphuric acid, formerly called vitriolic acid. Thus the sulphuret of iron vitriolated, becomes sulphate of iron, or green vitriol.
Changed into a vitriol or a sulphate, or subjected to the action of sulphuric acid or of a sulphate; as, vitriolated potash, i. e., potassium sulphate.
Vitriolated[Imperfect tense and past participle]Webster's Dictionary 1913
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