The Encyclopedia Americana (1906)/Munjistin

Munjistin, an orange coloring matter, closely allied to purpurin and to alizarin, which occurs in munjeet (East Indian madder), and has the fornmla C$14$H$5$(OH)$2$O$2$COOH. It dissolves in boiling alcohol, separating again, upon cooling, in the form of brilliant golden plates. Munjistin gives an orange yellow color when used as a dye with aluminum mordants, and with iron mordants it gives a brownish purple, its colors being fairly permanent