This solution, with the addition of a little tartaric oxalic acid, forms the dyeing liquor of Mr ... all the varieties of shades and colors given by madder are obtained—violet, purple, chocolate ...

This process, until very recently, has been necessary for all madder dyes. Third, where the mordants and coloring matters are previously combined together to form the color to be impressed ...

In some areas, the plant is known as woodruff or madder. It grows throughout Europe and Asia and features small white blossoms. The plant-based pigment was used to dye ten beads made out of shells.

Illustration by Aurélia Fronty Q: I’ve heard that purple was called the royal color because ... a fabric with a blue dye, like indigo or woad, and a red dye, like madder. But the “Tyrian ...

The root of the madder plant produced a red colour ... Stale urine may have been used as a mordant to fix dyes. Diodorus Siculus, writing in the first century BC, described the Celts wearing ...

Madder is a mixture of two very similar compounds ... Raman spectroscopy is rendered useless by the dyes' fluorescence, which obscures the signal. This problem can be avoided with surface-enhanced ...