(verdigris and blanco),
Verdigris: how brass oxidizes.
1 a : a green or greenish-blue poisonous pigment resulting from the action of acetic acid on copper and consisting of one or more basic copper acetates b : normal copper acetate Cu(C2H3O2)2·H2O
2 : a green or bluish deposit especially of copper carbonates formed on copper, brass, or bronze surfaces
Blanco: chalk used to make equipment white.
Blanco came in either powder or cake form, much like soap, and was used as a cleaning and colouring compound. Blanco was applied with a brush and water, and rubbed into the woven cotton material of load bearing equipment, to provide a consistent colour to equipment worn by soldiers in the same unit, and as a method of cleaning the gear.
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