Pigmento
Keywords: Pigmento, Albino, Animalia, Biologia, Lead, Plantae, Carbon black, Cadmium pigments, Alizarin
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In the coloring of paint, ink, plastic, fabric and other material, a pigment is a dry colorant, usually an insoluble powder. There are both natural and synthetic pigments, both organic and inorganic ones. Pigments work by selectively absorbing some parts of the visible spectrum (see light) whilst reflecting others.
A distinction is usually made between a pigment, which is insoluble, and a dye, which is either a liquid, or is soluble. There is no well-defined dividing line between pigments and dyes, however, and some coloring agents are used as both pigments and dyes. In some cases, a pigment will be made by precipitating a soluble dye with a metallic salt. The resulting pigment is called a "lake".
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List of pigments
Heme/Porphyrin based
- Chlorophyll
- Bilirubin
- Hemocyanin
- Hemoglobin
Light emitting
- Luciferin
Lipochromes
- Carotenoids
- Alpha and Beta Carotene
- Cyanins
- Anthocyanin
- Lycopene
- Rhodopsin
- Xanthophylls
- Canthaxanthin
- Zeaxanthin
- Lutein
Photosynthetic
- Chlorophyll
- Phycobilin
Other
- Hematochrome
- Melanin
- Pthalocyanine blue
- Urea
Painting pigments
- Alizarin
- Cadmium pigments
- Carbon black
- Cerulean blue
- Chromium pigments
- Cobalt pigments
- Crimson
- Fugitive pigments
- Indigo dye
- Ivory black
- Lead pigments
- Mars black
- Naples yellow
- Phthalocyanine pigments
- Prussian blue
- Quinacridone pigments
- Red ochre
- Sienna
- Titanium dioxide
- Ultramarine
- Venetian Red
- Yellow ochre
- Zinc white