Product description: Molecular Formula: C33H41N3O Molecular Weight: 495.70 CAS Registry Number: 1325-86-6 Manufacturing Methods: Bis (4- (diethylamino) phenyl) methanone and N-Ethylnaphthalen-1-amine in Toluene and Phosphoryl chloride condensation. Properties and Applications: Brilliant blue (NC raw lacquer). Slightly soluble in water, but soluble in hot water for blue, soluble in ethanol for blue. In concentrated sulfuric acid for brown light yellow, dilution after red yellow. Dye aqueous solution to join sodium hydroxide as red brown. Mainly used for carbon paper, ball pen etc of cultural and educational supplies coloring. International brands: Oil Blue 603, Oil Blue 102, Oil Blue BO, Oil Blue 613, Solvent Blue BO, Victoria Pure Blue BO Base Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%) Melting point Stable ISO Poor 90 110 Insoluble No change Dissole 1. Solubility: Appearance   Solubility (g/l) Alcohal 300 1-methoxy-2-propanol 200 N-propanol 200 2-ethoxyethanol - M.E.K - Ethxy Acetate - Toluene - Heat Stability 150°C 30min A 180°C 10min A 200°C 1min A Light Fasthess 4-5