(a) in the presence of sulfuric acid hydrochloric acid and Benzaldehyde (1 Moore) N,N-dimethylaniline (2 Moore) condensation, then use Lead dioxide and acid oxidation its product, and then made free base; (b) N,N-dimethylaniline and 1-(Trichloromethyl)benzene heating, and then made free base.
Properties and Applications
brilliant blue light green. Soluble in water for cyan, soluble in ethanol are blue-green. In concentrated sulfuric acid to yellow, dilution after dark orange. Dye aqueous solution with sodium hydroxide have Copenhagen green precipitation.
