alizarin (natural colorant)
- Scope note
- A red colorant extracted along with purpurin from the roots of the madder plant; it is one of ten distinct isomers of dihydroxy anthraquinone. It has been used as a dye and pigment since ancient times. The colorant was first isolated in 1862 by Colin and Robiquet in France; For the synthetic colorant first produced in 1869, use "synthetic alizarin."
- Date of creation: 18-Nov-2024
Accepted term: 18-Nov-2024