Vat Yellow 33 CAS 12227-50-8

CAS number：12227-50-8
molecular formula：C54H32N4O6
molecular weight：832.86
EINECS number：235-436-2

English synonyms

vat yellow 33;4',4'''-azobis[n-(9,10-dihydro-9,10-dioxo-1-anthryl)]-[1,1'-biphenyl]-4-carboxamide;C.I. 65429;Vat yellow 33 (C.I. 65429);[1,1'-Biphenyl]-4-carboxamide, 4',4'''-azobis[N-(9,10-dihydro- 9,10-dioxo-1-anthracenyl)-;Cibanone Yellow 2GN;Indanthren Yellow F3GC;Nihonthrene Yellow 3GC

Related categories

Dyes; Vat Dyes; Dyes and Pigments; Organics

Chemical properties

Yellow powder. It is brown-red in concentrated sulfuric acid, yellow in hydrosulfite acid solution, and purplish red in hydrosulfite alkaline solution.

Use

●  Vat Yellow F3GC is used for dyeing cotton fabrics and is a brilliant yellow light red. High directness to cotton fibers and good levelness. Anti-dyeing and discharge printing can be carried out.

Production method

●  Using 4'-nitro-4-bibenzoic acid and 1-aminoanthraquinone as raw materials, firstly reduce 4'-nitro-4-bibenzoic acid and glucose under alkaline conditions to obtain azo compounds, and then use chlorine Sulfoxide (SOCl2) for acyl chlorination, and finally condensed with 1-aminoanthraquinone to obtain the product. .