Preparation
different compounds process is: (a) ?1-Nitrobenzene?and?aniline?and?aniline?hydrochloride and iron or copper in 180 ~ 200 ℃ heating, and made free base (b) will Nitrophenol or Nitrocresols, aniline?and aniline?hydrochloride and a small amount of iron in 180 ~ 200 ℃ heating, and made free base.
Properties and Applications
blue-black to black. Insoluble in water, soluble in ethanol for blue black, also soluble in benzene and toluene, soluble in acid and stearic acid. In concentrated sulfuric acid for blue to blue black, dilution after blue-black precipitation; In concentrated nitric acid for blue to black blue. The dye which is components mixture
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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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General-Good
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>180
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180
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Insoluble
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Well
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Well
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