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Product name
7-(Diethylamino)-3-Phenylcoumarin
Alternative names
7-(Diethylamino)-3-Phenyl-2H-Chromen-2-one, Coumarin DEAP
Description
Strongly fluorescent 7-(diethylamino)-3-phenylcoumarin has been supplied by Renaissance Chemicals Ltd for many years. It is the coumarin with the remarkably high quantum yield of close to 1.0.
Strongly fluorescent 7-(diethylamino)-3-phenylcoumarin is a yellow powder soluble in aliphatic and aromatic solvents to give a very strong blue green fluorescence.
Spectral Data
λ max. absorbance = 400nm, λ max. emission = 480nm. (methanol). Quantum Yield circa 1.0
Lightfastness
Anliker and Müller reported that 3 substituted coumarins have better lightfastness than 4 substituted coumarins.
Application
It is used for marking, tracing and verifying.
Quantity
Grammes to multiple kilos
Package
Vial, bottle or keg
Availability
5 - 25kg available in 2 weeks and gramme quantities available now
Price
Please contact us for prices.
Other information
In dilute solution it gives a greenish blue fluorescence under UV Light with lambda max (abs) toluene 397 - 400nm. The melting point is > 151 degrees centigrade.
3 substituted coumarins are claimed to have better lightfastness than 4 substituted coumarins
Further reading & references
Below you’ll find a curated collection of references related to this product. These sources include academic research, review articles, and case studies that explore the chemistry, applications, and sustainability benefits our products. Whether you’re looking for in-depth technical details or broader insights into their real-world use, these references are a great place to start.
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Crystal structure, mesomorphic and emission properties of liquid crystals having a 7-(diethylamino)-3-phenylcoumarin core
Haruko Takechi, Kanji Kubo, Hajime Takahashi, Taisuke Matsumoto. 2007. J Oleo Sci . 2007;56(4):195-200. doi: 10.5650/jos.56.195..
https://pubmed.ncbi.nlm.nih.gov/17898482/ -
Fluorescent Whitening Agents
Anliker, R. and G. Muller. 1975. Georg Thieme Publishers.
Product number
19CDEAP24
CAS Number
84865-19-0
EC Number
811-806-4
