Metal based pigments info Chemical Man

A pigment is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption. This physical process differs from fluorescence, phosphorescence, and other forms of luminescence, in which a material emits light.Many materials selectively absorb certain wavelengths of light. Materials that humans have chosen and developed for use as pigments usually have special properties that make them ideal for coloring other materials. A pigment must have a high tinting strength relative to the materials it colors. It must be stable in solid form at ambient temperatures.For industrial applications, as well as in the arts, permanence and stability are desirable properties. Pigments that are not permanent are called fugitive. Fugitive pigments fade over time, or with exposure to light, while some eventually blacken.Pigments are used for coloring paint, ink, plastic, fabric, cosmetics, food, and other materials. Most pigments used in manufacturing and the visual arts are dry colorants, usually ground into a fine powder. This powder is added to a binder (or vehicle), a relatively neutral or colorless material that suspends the pigment and gives the paint its adhesion.

Metal-based pigments
 List of inorganic pigments

Cadmium pigments: cadmium yellow, cadmium red, cadmium green, cadmium orange, cadmium sulfoselenide
Chromium pigments: chrome yellow and chrome green (viridian).
Cobalt pigments: cobalt violet, cobalt blue, cerulean blue, aureolin (cobalt yellow)
Copper pigments: Azurite, Han purple, Han blue, Egyptian blue, Malachite, Paris green, Phthalocyanine Blue BN, Phthalocyanine Green G, verdigris
Iron oxide pigments: sanguine, caput mortuum, oxide red, red ochre, Venetian red, Prussian blue
Lead pigments: lead white, cremnitz white, Naples yellow, red lead, lead-tin-yellow
Manganese pigments: manganese violet
Mercury pigments: vermilion
Titanium pigments: titanium yellow, titanium beige, titanium white, titanium black
Zinc pigments: zinc white, zinc ferrite, zinc yellow
Aluminum pigment: Aluminum powder
Other inorganic pigments
Carbon pigments: carbon black (including vine blac, lamp black), ivory black (bone char)
Clay earth pigments (iron oxides): yellow ochre, raw sienna, burnt sienna, raw umber, burnt umber.
Ultramarine pigments: ultramarine, ultramarine green shade
Biological and organic
Biological origins: alizarin (synthesized), alizarin crimson (synthesized), gamboge, cochineal red, rose madder, indigo, Indian yellow, Tyrian purpleNon biological organic: quinacridone, magenta, phthalo green, phthalo blue, pigment red 170, diarylide yellow.