Assertion: alizarin | /r/HasProperty | red dye
Facets:
Source sentences:
text: Alizarin is a red dye extracted from the roots of the madder plant, Rubia tinctorium.
text: The roots of this plant have been used since ancient times to extract alizarin and purpurin, two red dyes used for coloring clothes.
text: Alizarin, the red dye present in madder, was the first natural pigment to be duplicated synthetically, in 1869, leading to the collapse of the market for naturally grown madder.
text: Alizarin, the red dye present in madder, was the first natural pigment to be duplicated synthetically in 1869, a development which led to the collapse of the market for naturally grown madder.:65