#madder root

• Alizari — A rare technical or commercial term used to designate the root of the Rubia tinctorum plant (madder), from which a natural red pigment is extracted, or the historical name given to the coloring substance obtained directly from this plant before the advent of synthetic variations.
• Alizarin — A solid organic substance, crystallized in red-orange needles, insoluble in water, initially extracted from the madder root (Rubia tinctorum) and later obtained synthetically from anthracene. It is widely used in the textile industry as a highly stable dye for coloring in intense shades of red, purple, or black, as well as in medicine or microscopy as a chemical indicator.