4372-02-5

Basic information

• Product Name: disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate
• Synonyms: disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate;4',5'-Dibromofluorescein disodium;C.I.Acid Orange 11;D and C Orange No.6
• CAS NO: 4372-02-5
• Molecular Formula: C20H8Br2Na2O5
• Molecular Weight: 534.06206
• EINECS: 224-468-2
• Mol File: 4372-02-5.mol
• Article Data: 0

Chemical Properties

• Melting Point: 280-290 °C (decomp)
• Boiling Point: 633.7°C at 760 mmHg
• Flash Point: 337°C
• Appearance: /
• Vapor Pressure: 1.18E-16mmHg at 25°C
• CAS DataBase Reference: disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate(CAS DataBase Reference)
• NIST Chemistry Reference: disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate(4372-02-5)
• EPA Substance Registry System: disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate(4372-02-5)

Safety Data

• Hazardous Substances Data: 4372-02-5(Hazardous Substances Data)

Usage

Description

Disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate is a red light orange compound that exhibits unique fluorescence properties when dissolved in various solvents. It is soluble in water, showing an orange color with weak fluorescence, in ethanol, displaying an orange color with greenish fluorescence, and in acetone, appearing pink with yellow fluorescence. Additionally, it dissolves in chaff and four hydrogen furfuryl alcohol. When treated with strong sulfuric acid, it turns titian, and upon dilution, it turns into a yellow-brown color with orange precipitation. In an aqueous solution, the addition of sodium hydroxide turns it red. disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate also shows good dispersion in glycerin and liquid paraffin.

Uses

Used in Textile Industry:
Disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate is used as a dye in the textile industry for its unique color and fluorescence properties. It provides good light fastness, soaping, perspiration fastness, and resistance to oxygen bleaching, seawater, and fading. This makes it suitable for coloring silk and other fabrics, ensuring that the colors remain vibrant and resistant to various conditions.
Used in Fluorescent Materials:
Due to its fluorescence properties in different solvents, disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate can be used in the development of fluorescent materials for various applications, such as sensors, imaging, and biomedicine.
Used in Analytical Chemistry:
The color-changing properties of disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate in the presence of strong acids and bases make it a potential candidate for use in analytical chemistry as a pH indicator or for detecting specific chemical species.

Preparation

fluorescent element (C.I.Acid Yellow 73, C.I. 45350) in sodium hydroxide solution 2 brominated, and then, with sodium salting out.

Standard( Silk )

Light Fastness

Fading

Stain

ISO

1

InChI:InChI=1/C20H10Br2O5.2Na/c21-15-13(23)7-5-11-17(15)26-18-12(6-8-14(24)16(18)22)20(11)10-4-2-1-3-9(10)19(25)27-20;;/h1-8,23-24H;;/q;2*+1/p-2