Preparation
2-Amino-4-nitrophenol diazo, Coupled with resorcinol, its product again with diazo of aniline coupling, and then translate into 1:2 chromium complex.
Properties and Applications
red light brown. Soluble in water for brown, soluble in ethanol for red light brown. The strong sulfuric acid for orange brown, diluted for orange brown still. Add in aqueous solution hydrochloric acid have red brown precipitation; Add sodium hydroxide in red.
Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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6
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4
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4
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5
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4-5
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4
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|
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