Product description:
Vat Grey BG is a black powder. Insoluble in water.
It is dark green in concentrated sulfuric acid and has dark green precipitation after dilution. Alkaline reduction chromophyte is jujube red; Acid reduction chromophores are yellow-light brown.
Product parameter:
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CAS No. |
6049-19-0
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EINECS No.
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227-949-5
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C.I. No.
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65225
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Molecular Formula
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C64H34N4O8
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Molecular Weight
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986.98
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Appearance
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Black powder
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Application
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It is mainly used for the dyeing of cotton fabrics, and is suitable for suspension pad dyeing of light grey and polyester/cotton blended fabrics in two baths. A small amount is used for direct printing of cotton cloth. It is also applicable to the dyeing of silk, viscose, cotton/viscose and vinylon/cotton blended fabrics
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Density
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1.561g/cm3
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Solubility
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Insoluble in water. Dissolved in concentrated sulfuric acid, it appears dark green, and diluted to produce dark green
precipitation. It appears maroon in the alkaline solution of sodium hydrosulfite, and yellowish brown in the acid solution. |
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Diffusivity
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≥ Grade 4
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Particle fineness
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≤5μm
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PSA
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184.68000
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LogP
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12.27260
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Product picture:
Application of VAT Dyes:
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