Chemical Properties
Reddish brown powder. Insoluble in water, ethanol, acetone, chloroform, toluene, slightly soluble in o-chlorophenol, pyridine. Reddish brown in concentrated sulfuric acid, produces brownish yellow precipitate after dilution. Dark reddish brown in alkaline insurance powder reducing solution, dark yellow in acidic solution.
Preparation
1,5-Diaminoanthraquinoneand 1-Bromoanthracene-9,10-dione or 1-Chloroanthraquinone(2 Moore) condensation, product Potassium hydroxide with Aluminium chloride or cyclization, with Potassium permanganate again or Sodium hypochlorite oxidation.
Flammability and Explosibility
Not classified
Synthesis
1,1' : 5 1,''-Trianthrimide-2,2' : 6,2''-
carbazole, Indanthren Yellow 3 R,
is prepared from 1,1' : 5,1''-
trianthrimide in AlCl3-NaCl melts .
Properties and Applications
Yellow orange. Yellow powder. Slightly soluble in 2-Chlorophenol and Pyridine , insoluble in Etanol, Acetone, Chloroform and Toluene. The strong sulfuric acid to red light brown, dilute light yellow brown after precipitation. Alkaline reduction for dark red light body hidden color brown; Acid reduction for yellow color body hidden. The light is fragile. Mainly used for dyeing cotton roll and dip, the affinity of cotton cloth is good and the levelness of death and the covering power of cotton are good. Can to cotton direct printing. with Villeneuve shade of Pale, coloured silk high affinity, good fastness. Besides using background color outside, a small amount used to spell color. Sometimes also used for paper dyeing.
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Standard
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Ironing Fastness
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Chlorine bleach
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Light Fastness
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Mercerized
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Oxygen bleach
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Soaping
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Fading
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Stain
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ISO
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3
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5
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7
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4-5
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5
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5
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5
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AATCC
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3-4
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5
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7
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5
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5
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