... 5413-75-2 4.RED POWDER [ Auramine O C.I. basic yellow 2 ] is mainly used for dyeing ... also used in the paper, leather, paint color[ C.I. basic yellow 2 properties ] yellow powder which is uniform, ... easily soluble in hot water and ethanol.[ Auramine O C.I. basic yellow 2 use ] a low resistance fastness. ... by color break, used in ink.[ Auramine O C.I. basic yellow 2 The preparation or the source ] by ...