Description

Sodium 2-[7-(Diethylamino)-2-Oxo-2H-1-Benzopyran-3-Yl]-1H-Benzimidazolesulphonate is a high-purity, water-soluble fluorescent dye intermediate and functional chemical. This compound is valued for its excellent photostability and strong fluorescence emission properties, making it a critical component in advanced material science. It is primarily utilized by manufacturers in the specialty dyes, optical brighteners, and sensor development industries, where precise molecular performance is required.

Application

• Fluorescent Dye Synthesis: A key intermediate for producing coumarin-based fluorescent dyes and laser dyes.
• Optical Brightening Agents (OBAs): Used in the manufacture of brighteners for paper, textiles, and detergents.
• Biomolecular Labeling & Staining: Employed in the development of fluorescent probes and stains for biological imaging and diagnostics.
• Chemical Sensors: Acts as a signaling moiety in the design of fluorescent chemosensors for detecting ions and small molecules.
• Advanced Material Research: Used in the development of organic light-emitting materials and photonic devices.
• Security Inks & Markers: A component in formulations for anti-counterfeiting inks and security markings.

Basic Information

Product Name	Sodium 2-[7-(Diethylamino)-2-Oxo-2H-1-Benzopyran-3-Yl]-1H-Benzimidazolesulphonate
CAS No.	70267-73-1
Molecular Formula	C20H19N3NaO5S
Molecular Weight	436.44 g/mol
Synonyms	Sodium 2-(7-(Diethylamino)-2-oxo-2H-chromen-3-yl)-1H-benzimidazole-5-sulfonate; 3-(1H-Benzimidazol-2-yl)-7-(diethylamino)coumarin-5-sulfonic Acid Sodium Salt; Coumarin 7-Sulfonic Acid Sodium Salt Derivative; Fluorescent Brightener 351; 70267-73-1; 2-[7-(Diethylamino)-2-oxo-2H-chromen-3-yl]-1H-benzimidazole-5-sulfonic Acid Sodium Salt
EINECS	Contact for details

Quality Control

Our production of Sodium 2-[7-(Diethylamino)-2-Oxo-2H-1-Benzopyran-3-Yl]-1H-Benzimidazolesulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure high purity, consistent performance, and traceability. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, handling and packaging should minimize exposure to direct light to preserve product integrity.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Fluorescence Emission	Conforms to reference

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