vitriolate

from The Century Dictionary.

• noun An antiquated name for a sulphate.
• To convert into a vitriol, as iron pyrites by the absorption of oxygen, which reduces the iron to an oxid, and the sulphur to sulphuric acid.
• Converted into a vitriol or a sulphate.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To convert into, or change to, a vitriol; to make into sulphuric acid or a sulphate.
• transitive verb To subject to the action of, or impregnate with, vitriol.
• noun (Old Chem.) A sulphate.
• adjective rare Vitriolated.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry, obsolete A sulfate.