Description

Coumarin 338 is a high-purity, light-sensitive organic dye belonging to the coumarin family of laser dyes and fluorescent markers. This compound is valued for its excellent photostability and strong fluorescence properties, making it a critical component in advanced optical applications. It is primarily used by manufacturers and researchers in the photonics, analytical chemistry, and materials science industries for applications requiring precise light emission and detection.

Application

• Laser Dye: Used as an active medium in tunable dye lasers, particularly in the blue-green spectral region.
• Fluorescent Probes & Sensors: Employed in the development of chemical sensors and bio-sensors due to its sensitive emission properties.
• Optical Brighteners: Functions as a whitening agent in high-value polymers and coatings to enhance visual appeal.
• Photovoltaic Research: Investigated as a potential component in dye-sensitized solar cells (DSSCs) for light harvesting.
• Analytical Chemistry: Serves as a fluorescent tracer or tag in chromatographic and electrophoretic separation techniques.
• Non-Linear Optics (NLO): Used in research for studying frequency doubling and other non-linear optical phenomena.

Basic Information

Product Name	Coumarin 338
CAS No.	62669-75-4
Molecular Formula	C20H19NO4
Molecular Weight	337.37 g/mol
Synonyms	7-Diethylamino-4-methylcoumarin; C-338; Coumarin 4; 4-Methyl-7-diethylaminocoumarin; 7-(Diethylamino)-4-methyl-2H-1-benzopyran-2-one; MDAC; Coumarin 4; Coumarin 4M; Laser Grade Coumarin 338; 7-Diethylamino-4-methyl-2H-chromen-2-one
EINECS	Contact for details

Quality Control

Our Coumarin 338 is produced under strict quality management protocols to ensure batch-to-batch consistency and high performance. Each lot is tested for critical parameters including identity, purity, and fluorescence quantum yield. A comprehensive Certificate of Analysis (COA) detailing the results of HPLC, NMR, and spectroscopic analyses is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive; prolonged exposure to light should be avoided to prevent degradation of its fluorescent properties. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	72 - 76 °C
Fluorescence Emission Max	445 - 465 nm
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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