A green poisonous substance used as a pigment and drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates.
The green rust formed on copper.
1. A green or bluish-green crystallized substance formed on copper by the action of acetic acid, used as a pigment. 2. Green oxidation on copper, bronze, or brass.
basic copper acetate, used as a pigment from green to blue; blue verdigris is copper(II) acetate, Cu(C2H3O2)2.H2O.
Imitating the natural corrosion effect of copper, brass and bronze. A kind of greeny-blue rust.
copper or brass rust which gives a particular green colour to old roofs and bronze statues: valued for its aesthetic quality (Sometimes when a weathered copper roof has been partially repaired, the contrast between the bright new reddish-gold replacement and the old dull green copper right is highly visible.) used in medicine and for making pigments. See also Aerugo, Bronze, Patina
a blue or green powder used as a paint pigment
a green patina that forms on copper or brass or bronze that has been exposed to the air or water for long periods of time
Green color produced as a result of naturally occurring corrosion on copper.
a green crust or patina of copper sulfate or copper chloride formed on copper, brass, and bronze because of exposure to air or sea water over a long period.
A green or blue-green copper sulfate patina which forms over time on copper, brass and bronze as they weather.
a greenish blue patina that forms on copper, brass, or bronze surfaces
(Verdigrise) (verdigrease) A basic copper acetate (Cu(C)* Cu(OH)). Long used as a green pigment.
Light green corrosion deposition, usually copper carbonate, on the surface of copper based metals.
A green or greenish-blue coating that forms on brass, bronze, or copper.
Green corrosion deposited on metals such as copper, brass or bronze.
A strikingly green corrosion product that forms on copper in some circumstances, a complex basic copper acetate. Unlike a patina, it is water-soluble.
A greenish deposit on aged copper, bronze or brass. More info
A green powdery deposit which develops on copper, brass or bronze after long periods of exposure to air. Unlike the gradual oxidisation process that forms a desirable patina, verdigris is dreaded by coin and medal collectors in particular, as it is very difficult to treat on small objects.
Verdigris is the common name for the chemical Cu(CH 3 COO) 2 , or copper(II) acetate. It commonly occurs by the action of acetic acid when copper, brass or bronze is weathered and exposed to air or seawater over a period of time. Its name comes from the Middle English vertegrez, from the Old French verte grez, an alteration of vert-de-Grice — verd (green), de (of), and Grice (Greece)— "green of Greece".