Preparation
4-Nitrophenol and Sodium polysulfide solution in Copper sulfate monohydrate existence, in 128 ~ 130 ℃ for 30 hours vulcanization reaction, and then add 4-Methylbenzene-1,3-diamine cure the product (equivalent to C.I. Sulphur Orange 1, C.I. 53050) in aqueous solution, and evaporation this mixture to dry (FIAT 764). Available 4-Aminophenol instead of 4-Nitrophenol.
Properties and Applications
olive green to dark yellow brown. In the sodium sulfide solution for yellow brown; In concentrated sulfuric acid for olive brown, dilution after olive brown precipitation.
Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Moderate
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Severe
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ISO
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3-4
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4
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4-5
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4
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4
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3-4
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AATCC
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|
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5
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|
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4
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