Description

Coumarin 521T is a high-purity, light-sensitive organic dye belonging to the coumarin family, identified by CAS NO 114768-72-8. This compound is valued for its excellent photophysical properties, including high fluorescence quantum yield and good photostability, making it a critical component in advanced optical applications. It is primarily sought by manufacturers and researchers in the photovoltaic, laser technology, and analytical chemistry sectors for use as a gain medium, fluorescent probe, or marker.

Application

• Laser Dyes: Used as a gain medium in tunable dye lasers, particularly in the blue-green spectral region.
• Organic Light-Emitting Diodes (OLEDs): Serves as a dopant or emitter material in the development of efficient blue-emitting layers.
• Fluorescent Sensors and Probes: Employed in chemical and biological sensing applications due to its sensitive fluorescence properties.
• Photovoltaic Research: Investigated as a component in dye-sensitized solar cells (DSSCs) for light-harvesting.
• Optical Brighteners: Functions in high-value applications requiring specific fluorescence characteristics.
• Academic and Industrial R&D: Utilized as a standard or reference compound in photochemistry and material science research.

Basic Information

Product Name	Coumarin 521T
CAS No.	114768-72-8
Molecular Formula	C20H18N2O2
Molecular Weight	318.37 g/mol
Synonyms	Coumarin 521T; 7-Diethylamino-4-methylcoumarin; 4-Methyl-7-diethylaminocoumarin; C521T; 7-(Diethylamino)-4-methyl-2H-chromen-2-one; Coumarin 7; Laser Grade Coumarin 521T; Fluorescent Brightener 521T
EINECS	Contact for details

Quality Control

Our Coumarin 521T is produced under strict quality management protocols to ensure batch-to-batch consistency and high performance. Each lot undergoes comprehensive analytical testing, including HPLC for purity, spectroscopic identification, and impurity profiling. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat and incompatible materials. Due to its light-sensitive nature, handling should be performed under subdued light or amber glass containers when possible.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Fluorescence Emission Max	~490 - 510 nm
Residue on Ignition	≤ 0.1%

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