Preparation
N-(5-chloro-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide and N-(4-amino-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide Condensation in the presence of copper, and then cyclized with sulfuric acid.
General Description
Odorless brown to dark brown powder.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
Vat Brown 3 is incompatible with oxidizing and reducing agents. .
Fire Hazard
Flash point data for Vat Brown 3 are not available. Vat Brown 3 is probably combustible.
Flammability and Explosibility
Not classified
Synthesis
4,5'-Bisbenzoylamino-1,1'-dianthrimide-
2,2'carbazole , Indanthren Brown
R, is prepared from 4,5'-bisbenzoylamino-
1,1'-dianthrimide by ring closure in concentrated
sulfuric acid .
Properties and Applications
brown. Deep red powder. Insoluble in water and Etanol, slightly soluble in Xylene for bordeaux red solution. In concentrated sulfuric acid for dark wine red, dilution to red light brown, flocks. Alkaline reduction leuco body for the color red; Acid reduction leuco for yellow brown. Is light brittle dye. To cotton affinity is poorer, less used in cotton dyeing. Suitable for direct printing, resist printing and aniline black color resist, also suitable for shallow, color of discharge. Suitable for cotton knits dyeing, more suitable for silk printing. But printing and dyeing fabric in sunlight exposure easy appear fiber brittle damage phenomenon. Can be used for viscose and wool dyeing, can also be processed into organic pigment.
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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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5
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5
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7
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4-5
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4-5
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5
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5
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AATCC
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5
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5
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7-8
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4-5
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4-5
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