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HomeProductsIndustries & ApplicationsTextileVat Black 27 CAS No.2379-81-9
Vat Black 27 CAS No.2379-81-9
  • Vat Black 27 CAS No.2379-81-9

Vat Black 27 CAS No.2379-81-9

Basic Info

Model No.: C.I.Vat Black 27

Product Description

Dynathrene Dyes offer excellent fastness to washing, light and bleaching for cellulosic fiber.

Dynathrene C.I. Vat CAS NO. Characteristics
Olive R Black 27 2379-81-9 Brownish Grey

Product Name: Vat Black 27
Synonyms:C.I. 69005; C.I. Vat Black 27; -; N,N'-(5,10,15,17-tetraoxo-10,15,16,17-tetrahydro-5H-dinaphtho[2,3-a:2',3'-i]carbazole-6,9-diyl)dibenzamide,Vat Olive 2G,Vat Olive R
Molecular Formula:C42H23N3O6

Molecular Weight: 665.65
CAS NO.2379-81-9
Molecular Structure :

CAS NO.2379-81-9

Properties and Applications: brown light grey. Black powder. Soluble in 2 – Chlorophenol, slightly soluble in Chloroform and Pyridine , not soluble in Acetone, Etanol, Toluene and Xylene. In concentrated sulfuric acid for red, dilution after flocculent olive green precipitation. Alkaline reduction leuco for red brown; Acid reduction leuco for yellow brown. Mainly used in cotton fiber dyeing, suitable for suspension pad dyeing, also used for cotton yarn of the jig dyeing cotton and the impregnation, rarely used for printing. Can with other VAT dye spell dyed noise. Dyeing silk, affinity and levelness were good, also used for Fiber/cotton blended fabric dyeing.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 3 4-5 7 4-5 4-5 4-5 4-5
AATCC 3 4-5 7 4 4-5


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