Vat blue 8 (C.I. 73800)

Vat blue 8 (C.I. 73800) Structure
CAS No.
6424-71-1
Chemical Name:
Vat blue 8 (C.I. 73800)
Synonyms
C.I.73800;Vat Blue 8;C.I.Vat Blue 8;Vat blue 8 (C.I. 73800);C.I.Vat Blue 8:C.I.73800;Indanthren Printing Blue 2G;5-Chloro-2-[4-chloro-1-oxonaphthalen-2(1H)-ylidene]-7-methoxy-4-methyl-1H-indol-3(2H)-one
CBNumber:
CB41486010
Molecular Formula:
C20H13Cl2NO3
Molecular Weight:
386.22812
MOL File:
6424-71-1.mol

Vat blue 8 (C.I. 73800) Chemical Properties,Uses,Production

Preparation

5-chloro-7-methoxy-4-methyl phenol indolenine?and 4-Chloronaphthalene-1,2-dione?condensation, or 4-Methyl-5-chloro-7-methoxy-3-indolinone and 4-Chloro-1-naphthol condensation (BIOS 983).

Properties and Applications

blue to navy blue. In concentrated sulfuric acid to blue light green; In concentrated nitric acid for blue green to brown light yellow, In the basic insurance powder solution for yellow; In the acidic insurance powder solution for pale yellow.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 4-5 4 5-6 4 4

Vat blue 8 (C.I. 73800) 5-Chloro-2-[4-chloro-1-oxonaphthalen-2(1H)-ylidene]-7-methoxy-4-methyl-1H-indol-3(2H)-one C.I.73800 C.I.Vat Blue 8 Indanthren Printing Blue 2G C.I.Vat Blue 8:C.I.73800 Vat Blue 8 6424-71-1