Organic pigment
Plural: Organic pigments
Organic pigment definition
Definition(s)
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Organic pigments are coloring substances made from carbon-based compounds, used to give color to paints, inks, dyes, plastics, cosmetics, and other materials. In art, they are valued for their often vivid, intense, and transparent colors, especially in modern painting and glazing techniques.
Organic pigments may be either natural or synthetic:
- Natural organic pigments come from plant or animal sources, such as indigo, madder lake, carmine, and gamboge. Historically, many of these pigments were important in painting, textiles, manuscripts, and decorative arts.
- Synthetic organic pigments are produced through chemical processes. They include many modern colors such as phthalocyanine blue, phthalocyanine green, quinacridone red, dioxazine violet, and many azo pigments.
Compared with many inorganic pigments, organic pigments are often more brilliant, lighter in weight, and stronger in tinting strength. However, their permanence varies widely: some are highly lightfast and durable, while others may fade when exposed to strong light over time.
Examples
Context
Organic pigments are especially important in modern and contemporary painting because they offer colors that are often more saturated and luminous than many traditional earth or mineral pigments. They are commonly found in oil paint, acrylic paint, watercolor, gouache, printing inks, and industrial colorants.
Historically, natural organic pigments were often made into lake pigments, meaning that a soluble dye was fixed onto an insoluble mineral base so it could behave more like a pigment. Examples include madder lake and carmine lake.
In modern paint manufacturing, synthetic organic pigments have greatly expanded the artist’s palette. Many are extremely powerful, meaning that only a small amount can strongly influence a mixture. For this reason, artists often use them carefully when mixing colors.
Core Principles
- Carbon-based origin: organic pigments are based on carbon-containing compounds.
- Natural or synthetic: they may come from plants and animals, or be manufactured chemically.
- High chroma: many organic pigments produce bright, intense, saturated colors.
- Variable permanence: lightfastness depends on the specific pigment, not simply on whether it is organic or inorganic.
- Strong tinting power: many modern synthetic organic pigments can dominate a color mixture quickly.
- Transparency: many organic pigments are naturally suited to glazing and layered painting effects.
Derivation
The word organic comes from the Greek organikos, meaning “relating to an organ or living being,” later passing through Latin and into modern scientific language. In chemistry, “organic” refers to carbon-based compounds. The word pigment comes from the Latin pigmentum, meaning “coloring matter” or “paint.”