Solvent black 7 is used for coloring plastics, rubber, bakelite, inks, paints, carbon paper, and shoe polish. Oil-soluble aniline black is a black dye that is generated directly on cotton fabrics and is insoluble in common solvents. It is also widely used for dyeing and printing cotton fabrics.
different compounds process is: (a) 1-Nitrobenzeneandanilineandanilinehydrochloride and iron or copper in 180 ~ 200 ℃ heating, and made free base (b) will Nitrophenol or Nitrocresols, anilineand anilinehydrochloride and a small amount of iron in 180 ~ 200 ℃ heating, and made free base.
Flash point data for Solvent black 7 are not available. Solvent black 7 is probably combustible.
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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The ITSL for solvent black has been changed from 0.04 μg/m3 to 0.1 μg/m3 based on annual
averaging time.
