Preparation
C.I. Vat Green 1 (C.I. 59825)in the presence of sodium nitrite, bromide, fuming sulfuric acid, and avoid off meth.
Properties and Applications
brilliant green. Variegated dark green powder. Soluble in 1, 2, 3, 4 – Tetrahydronaphthalene, there are green fluorescent, slightly soluble in 2 – Chlorophenol, not soluble in Acetone, Etanol, Chloroform, Pyridine and Toluene. In concentrated sulfuric acid to dark purple. Alkaline reduction leuco for blue; Acid reduction leuco for blue light red. Mainly used for cotton dyeing and printing paper and coloring.
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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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3
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6-7
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4-5
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4-5
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5
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4
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AATCC
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5
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4
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6-7
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4-5
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4-5
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