Properties and Applications
dark red light orange. Soluble in water for orange to orange brown, slightly soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for Gray light purple to blu-ray black, diluted to olive brown for yellow; In nitric acid for yellow olive brown. The dye solution to join strong hydrochloric acid for olive brown to black light brown; Add thick sodium hydroxide solution for orange. Used for cellulose fiber dyeing and printing, also used in leather and paper color
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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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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4
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3
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5
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3
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2-3
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AATCC
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5
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2
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4-5
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4-5
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2
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