Organic colorants
Organic colorants are dyes or pigments that are described in organic chemistry , i.e. contain carbon .
Natural organic dyes such as purple and indigo represent by far the smallest part of all organic colors used today. In the vast majority of cases, these are easily stimulable aromatic basic structures as chromophores , which rarely have a natural analogue , but their value in their chemical stability and high Modifiability exists.
The most synthetically produced colorants include:
- Carbonyl colorants
- Cyanine colorants such as di- and triphenylmethane dyes , quinone imines
- Azo colorants ( azo dyes )
- Isoindoline pigments
- Phthalocyanines
- Dioxazine colorants
Organic colorants are used in the manufacture of paints , in the textile and food industries , in the manufacture of organic light-emitting diodes and in cosmetics .
Natural organic coloring
- vegetable
- Indigo , madder , yellowwood , bluewood , redwood , various dye plants
- animal
- Cochineal , kermes , purple