Vitriolic

a vitriolic taste

Source: wiktionary

No one, who uſes his Senses, can possibly doubt, but there is ſomewhat of a vitriolic Nature found in Mineral Waters: for not only the Taſte, but the Sight confirms it, by their turning inky with Galls, &c.

Source: wiktionary

Nature, far from being confined to the lapis pyrites, has abundant materials, and a great variety of them, in the bowels of the earth, wherewith to impregnate the waters called chalybeate and vitriolic; and thoſe of various degrees of acidity and ſtypticity, even from the mildeſt, where the acid is ſcarcely ſenſible, to the moſt ſharp and cauſtic of the vitriolic ores above enumerated.

Source: wiktionary

[T]he name vitriol ought to be applied to all vitriolic ſalts with metallic baſes. Thus, for inſtance, the ſalt compoſed of vitriolic acid and gold may be called vitriol of gold; and the ſalt formed by the union of this acid with ſilver may be called vitriol of ſilver, or lunar vitriol. Perhaps all vitriolic ſalts might be conveniently comprehended under the general name vitriol.

Source: wiktionary