archil

Definitions

Examples

• Archil, r′kil, n. a colouring substance obtained from various species of lichens.

• Roccella, rok-sel′a, n. a genus of parmeliaceous lichens, yielding dyers' archil or orchil.

• Sometimes a little archil is added to the madder, to give the dye a pink tinge; but this is fugitive.

• Its conversion into the archil red is effected by the action of an alkali, in contact with the air.

• The soap is coloured with strong alcoholic solution of archil for the rose tint, and of turmeric for the deep yellow.