VAT BLACK 27 CAS 2379-81-9

VAT BLACK 27 Basic information

   Black powder. Insoluble in water, acetone, ethanol, toluene, xylene, slightly soluble in chloroform, pyridine, soluble in o-chlorophenol. Reddish in concentrated sulfuric acid, it is diluted to produce a fluorescent olive-green precipitate.

Product Name: VAT BLACK 27
Synonyms: N,N'-(10,15,16,17-tetrahydro-5,10,15,17-tetraoxo-5H-dinaphtho[2,3-a:2',3'-i]carbazole-6,9-diyl)bis(benzamide);Vat Olive Green R;Benzamide, N,N-(10,15,16,17-tetrahydro-5,10,15,17-tetraoxo-5H-dinaphtho2,3-a:2,3-icarbazole-6,9-diyl)bis-;C.I.VATBLACK27;Vat black 27 (C.I. 69005);Anthramar Olive R;Cibanone Olive 2R;Dycosthren Olive R
CAS: 2379-81-9
MF: C42H23N3O6
MW: 665.65
VAT BLACK 27 Chemical Properties

Boiling point	685.54°C (rough estimate)
density	1.537
refractive index	1.7800 (estimate)
mf

    Reduced olive R is mainly used for dyeing cotton fiber, with good evenness and good affinity. It can also be used for dyeing viscose fiber, silk, cotton and polyester cotton with disperse dyes in the same bath. VAT olive R is mostly used for color matching, such as dyeing gray, brown, dark green, dark blue and other colors.