Purification Methods
The amine forms red pKEst crystals from aqueous EtOH or CHCl3/EtOH (m 158o). The UV has max at 335nm (cyclohexane). [Beilstein 12 H 751, 12 III 1683, 12 IV 1692.]
Properties and Applications
Bright green light yellow. Insoluble in water, slightly soluble in alcohol. The strong sulfuric acid for brown, after dilute for light yellow. Add sodium hydroxide solution for yellow dye. Used in vinegar, spandex fiber dyeing, also can be used for plastic color.
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StandardVinegar fiber
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Ironing Fastness
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Light Fastness
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Persperation Fastness
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Washing Fastness
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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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3-4
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5
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3
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3-4
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4
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