Preparation
(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.
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Standard
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Light Fastness
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Heat-resistant(℃)
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water
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Sodium Carbonate(5%)
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Hydrochloric acid(5%)
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Melting point
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Stable
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ISO
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Poor
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60
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Fade
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