6371-38-6

Basic information

• Product Name: 5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one
• Synonyms: 5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one;5,5',7,7'-Tetrachloro-Δ2,2'(3H,3'H)-bi[1H-indole]-3,3'-dione;C.I.73040;C.I.Vat Blue 41;Δ2,2'-Bi[5,7-dichloroindoline-3-one];Einecs 228-896-0
• CAS NO: 6371-38-6
• Molecular Formula: C₁₆H₆Cl₄N₂O₂
• Molecular Weight: 400.04304
• EINECS: 228-896-0
• Mol File: 6371-38-6.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 523.3°C at 760 mmHg
• Flash Point: 270.3°C
• Appearance: /
• Density: 1.718g/cm³
• Vapor Pressure: 4.79E-11mmHg at 25°C
• Refractive Index: 1.718
• CAS DataBase Reference: 5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one(CAS DataBase Reference)
• NIST Chemistry Reference: 5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one(6371-38-6)
• EPA Substance Registry System: 5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one(6371-38-6)

Safety Data

• Hazardous Substances Data: 6371-38-6(Hazardous Substances Data)

Usage

Description

5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one is a complex organic compound with a unique molecular structure. It exhibits properties such as red light blue color and is insoluble in ethanol. When treated with concentrated sulfuric acid, it turns blue light green, and upon dilution, it forms a blue precipitate. In a basic insurance powder solution, it exhibits a yellow color.

Uses

Used in Textile Industry:
5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one is used as a dye for textiles. Its unique color properties and light fastness make it suitable for various applications in the textile industry.
Used in Dye Industry:
5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one is used as a dye in the dye industry. Its color properties and light fastness make it a valuable component in the production of various dyes.
Used in Chemical Industry:
5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one is used as a chemical intermediate in the chemical industry. Its unique molecular structure makes it a potential candidate for various chemical reactions and processes.
Used in Research and Development:
5,7-dichloro-2-(5,7-dichloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one is used in research and development for its unique properties and potential applications in various fields. Its study can lead to the development of new products and technologies.

Preparation

(a)3,5-Dichloro-N-(carboxymethyl)anthranilic acid and Acetic anhydride reaction, with Sodium hydroxide product processing, then use air oxidation; (b) in Acetic anhydride and Sodium acetate trihydrate existence, 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- in Acetic acid glacial chloride in four (FIAT 764). Commodity dyes for the three and tetrachloro indigo dye mixture.

Standard

Ironing Fastness

Fading

Stain

ISO

5

InChI:InChI=1/C16H6Cl4N2O2/c17-5-1-7-11(9(19)3-5)21-13(15(7)23)14-16(24)8-2-6(18)4-10(20)12(8)22-14/h1-4,21-22H/b14-13-

Upstream product

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• 67-64-1 acetone 
• 482-89-3 1H,1H'-2,2'-Biindolylidene-3,3'-dione 
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Downstream Products

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