Significats de madder root en anglès

Purple colours are also manufactured by dyeing chalk with madder root and with hysginum.

Alizarin was known to the ancients, and until 1868 was obtained entirely from madder root.

Alizarine, which has been extensively discussed in various articles in our journal, is the coloring matter contained in the madder root.

One of the most notable of these is the substance known as alizarine, the coloring matter extracted from the madder root.

In 1870 the German chemists, Graebe and Liebermann, announced that they had succeeded in producing artificial alizarin,-thecoloring matter of the madder root.

Purpurin (1.2.4 trioxyanthraquinone) is found with alizarin in madder root; it is now prepared synthetically by oxidizing alizarin with manganese dioxide and sulphuric acid.

Turkey madder roots realise about 30s.