Note 468 — VERDIGRIS, or SPANISH GREEN.

[Verdigris is a mixture of three compounds of acetic acid with oxide of copper, which contain a preponderance of the base, hence basic acetates; distilled verdigris is made by digesting verdigris, or the mixture of basic acetates of copper, with excess of acetic acid and crystallizing by evaporation: the acid then exists in such proportions as to form a neutral acetate of copper.]