Preparation
3-Amino-4-hydroxy-5-nitrobenzenesulfonic acid diazotization, and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.
Properties and Applications
dark yellow red. Soluble in water for yellow orange. In concentrated sulfuric acid to yellow, after diluted solution for yellow; In concentrated hydrochloric acid for yellow solution; In concentrated sodium hydroxide solution for brown.
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Standard
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Ironing Fastness
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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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Water
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Alkali
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Acid
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ISO
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5
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6
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4
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5
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4-5
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5
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