Purple-red powder. Insoluble in water. Violet in concentrated sulfuric acid, red when diluted. Reddish-brown in alkaline solution of insurance powder, brown in acidic solution.
Vat Brown 25 is mainly used for dyeing cotton fibers and printing cotton fabrics. It has good affinity, moderate leveling properties, and is the reddest shade in the brown spectrum, often used for color matching. It is also used for dyeing viscose fibers and silk.
N-(4-amino-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide and N-(5-chloro-4-methoxy-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamidecondensation, cyclization and then.
Properties and Applications
red light brown. Purple red powder. Insoluble in water. In concentrated sulfuric acid for purple solution, after dilution to red. Alkaline reduction leuco for red brown; Acid reduction leuco for brown. Used for cotton suspension pad dyeing, good levelness. Generally used in jig dyeing color matching, but also can be used for polyester/cotton, Fiber/cotton blended fabric, silk and viscose 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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5
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5
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7
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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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5
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5
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7-8
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5
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5
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