Description

Disodium 2-(11-Oxido-3-Oxo-3H-Dibenzo[C,H]Xanthen-7-Yl)Benzoate is a high-purity, water-soluble xanthene dye derivative. This compound is valued for its strong fluorescence and photostability, making it a critical component in advanced material and diagnostic applications. It is primarily sought by manufacturers in the analytical chemistry, biological staining, and specialty polymer industries for use as a fluorescent probe or marker.

Application

• Fluorescent Probes & Sensors: Used as a core fluorophore in the development of chemical and biological sensors for ion detection and pH measurement.
• Biological Staining & Microscopy: Employed in histology and cell biology for fluorescent labeling of tissues and cellular components.
• Laser Dyes & Optical Materials: Serves as a gain medium in tunable dye lasers and a component in light-harvesting systems or OLED research.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer in medical research for targeted cancer treatments.
• Analytical Reagents: Utilized as a tracer or indicator in chromatography and capillary electrophoresis for detection and quantification.
• Polymer & Material Science: Incorporated into polymers and coatings to impart fluorescent properties for security, tracking, or decorative purposes.

Basic Information

Product Name	Disodium 2-(11-Oxido-3-Oxo-3H-Dibenzo[C,H]Xanthen-7-Yl)Benzoate
CAS No.	6359-10-0
Molecular Formula	C27H14Na2O6
Molecular Weight	480.37 g/mol
Synonyms	Disodium Fluorescein; Acid Yellow 73; D&C Yellow No. 8; Solvent Yellow 94; Uranine; Fluorescein Sodium Salt; 9-(o-Carboxyphenyl)-6-hydroxy-3H-xanthen-3-one disodium salt; 2-(6-Hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid disodium salt
EINECS	228-786-4

Quality Control

Our Disodium 2-(11-Oxido-3-Oxo-3H-Dibenzo[C,H]Xanthen-7-Yl)Benzoate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Orange-red to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Fluorescence Purity	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.