Preparation
1,4-Diaminoanthraquinone and 1-Bromoanthracene-9,10-dione or 1-Bromoanthracene-9,10-dione (2 Moore) condensation, its product in Pyridine with Aluminium chloride heating.
General Description
Fine, dark brown to black crystalline powder with a slight odor.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
Oxidizing agents and reducing agents may destroy Vat Brown 1's color. .
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition Vat Brown 1 may emit toxic fumes of carbon oxides and nitrogen oxides.
Fire Hazard
Flash point data for Vat Brown 1 are not available; however, Vat Brown 1 is probably combustible. Dust clouds may form explosive mixtures with air.
Synthesis
1,1' : 4,1''-Trianthrimide-2,2' : 3,2''-
carbazole, (Indanthren Brown BR,
is prepared from 1,1' : 4,1''-
trianthrimide in AlCl3 – pyridine .
Properties and Applications
red light brown. Dark brown powder. Slightly soluble in hot 1, 2, 3, 4 – Tetrahydronaphthalene and thermal Xylene, insoluble in cold Xylene. In concentrated sulfuric acid to Copenhagen green, dilution after brown precipitation. Alkaline reduction leuco for yellow brown; Acid reduction leuco for dark olive. Mainly used for cotton, hemp, silk and viscose dyeing and printing, cotton yarn dyeing common varieties. Used for polyester/cotton blended fabric two bath dyeing of polyester with little color. The leuco used for dyeing cotton knitwear.
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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
|
5
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4-5
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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
|
5
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5
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8
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4-5
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4-5
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