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Structural Formula:
Characters:
Yellow uniform powder. Soluble in cold water, soluble in hot water was bright yellow, soluble in ethanol, yellow, aqueous solution when the temperature exceeds 70 ℃ , dye is broken down into 4-methyl benzophenone, its aqueous solution by adding concentrated sulfuric acid was colorless, pale and diluted yellow . In concentrated nitric acid in the orange. Hydrochloric acid solution plus its turn yellow, or colorless when heated to boiling; plus sodium hydroxide solution generated a white precipitate. Dye on the silk fiber was Yan yellow, red in incandescent light, more.
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Quality standards : Lu Q / JI 5-80
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Index Name
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Indicators
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Appearance
Intensity, sub –
Shade
Of water-insoluble impurities,%
Moisture content,%
Fineness (through 80 mesh sieve residue content),%
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Yellow uniform powder
As the standard of 100 ± 3
With the standard approximation
≤1.5
≤3.5
≤5
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Uses:
Can be used for silk, acrylic, tannin mordant dyeing of cotton fiber dyed, bright color, but the fastness is poor, and can be painted in green or red. Can also be used for leather, paper, linen and viscose dyeing. Can also be used tannin mordant dyeing cotton direct printing and discharge printing in color. Alkaline body can be used for oils, fats, paint coloring. Preparation of lake can be used in printing ink and so on.
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Application Performance:
In the cotton fabric dyeing fastness (grade):
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Sun
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Soaping
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Flooding
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Perspiration
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Ironing
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Friction
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Acid
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Fade
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Staining
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Fade
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Staining
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Fade
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Staining
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Dry
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Wet
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Sulfate
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Acetate
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Sodium
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1～2
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3
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4～5
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4
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3～4
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3～4
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3～4
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4～5
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4～ 5
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4～5
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2～3
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4
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1～2
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