5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one

5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Structure
CAS No.
29245-44-1
Chemical Name:
5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one
Synonyms
C.I.73045;Vat Blue 2;C.I.Vat Blue 2;C.I.Vat Blue 2:C.I.73045;BASF Brilliant Indigo 4G-N;BASF Brilliant Indigo 4G-D;5,5'-Dibromo-4,4'-dichloroindigo;5,5'-Dibromo-4,4'-dichloroindigo;4,4'-Dichloro-5,5'-dibromo-Δ2,2'-biindoline-3,3'-dione;5,5’-Dibromo-4,4’-dichloro-[2,2’-biindolinylidene]-3,3’-dione
CBNumber:
CB5902893
Molecular Formula:
C16H6Br2Cl2N2O2
Molecular Weight:
488.95
MOL File:
29245-44-1.mol

5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Properties

Boiling point 556.3±50.0 °C(Predicted)
Density 2.026±0.06 g/cm3(Predicted)
pka -6.23±0.20(Predicted)

5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Chemical Properties,Uses,Production

Preparation

(a) in the Chloroacetic acid or methyl bromide in sulfate Janson 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (namely VAT dye C.I. 73025) [FIAT 764 and 1313], or in the cold sulfuric acid in?3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (GP 23496 l); (b) 3-Bromo-6-(carboxymethylamino)-2-chlorobenzoic acid?and Sodium methanolate reaction, product with Potassium hydroxide treatment, and air oxidation (USP 957683). Note: C.I. 73025 chemical structure as above.

Properties and Applications

green light blue. Soluble in Xylene is blue. In concentrated sulfuric acid to green light blue, dilution after blue floc precipitation; In the basic insurance powder solution for yellow brown; In the acidic insurance powder solution for colorless.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 4-5 3 3-4 3 2-3

5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Preparation Products And Raw materials

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5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one 4,4'-Dichloro-5,5'-dibromo-Δ2,2'-biindoline-3,3'-dione 5,5'-Dibromo-4,4'-dichloro-Δ2,2'(3H,3'H)-bi[1H-indole]-3,3'-dione BASF Brilliant Indigo 4G-D BASF Brilliant Indigo 4G-N C.I.73045 C.I.Vat Blue 2 5-bromo-2-(5-bromo-4-chloro-3-oxo-1H-indol-2-ylidene)-4-chloro-1H-indol-3-one Vat Blue 2 C.I.Vat Blue 2:C.I.73045 5,5'-Dibromo-4,4'-dichloroindigo 3H-Indol-3-one, 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro- 5,5’-Dibromo-4,4’-dichloro-[2,2’-biindolinylidene]-3,3’-dione 5,5'-Dibromo-4,4'-dichloroindigo 29245-44-1