155275-44-8

Basic information

• Product Name: C₃₃H₂₄N₂O₅
• CAS NO: 155275-44-8
• Molecular Weight: 528.564
• Mol File: 155275-44-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₃₃H₂₄N₂O₅(CAS DataBase Reference)
• NIST Chemistry Reference: C₃₃H₂₄N₂O₅(155275-44-8)
• EPA Substance Registry System: C₃₃H₂₄N₂O₅(155275-44-8)

Safety Data

• Hazardous Substances Data: 155275-44-8(Hazardous Substances Data)

Upstream product

• 587-02-0 m-ethylaniline 
• 2421-28-5 dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid 

Relevant articles and documents

Photophysical Processes in Aromatic Polyimides. 2. Photoreduction of Benzophenone-Containing Polyimide Model Compounds

The photochemical kinetic parameters for the model compounds of benzophenone-containing polyimide were determined on the basis of the Stern-Volmer analysis.The quantum yield for the photoreduction, ΦM, in dichloromethane decreased with an increase in the intramolecular charge-transfer (CT) caracter which depends upon the chemical structure of the amine components and the conformation around N-aryl group linkage.This could be explained well by a schematic photophysical mechanism in which the intersystem crossing followed by the hydrogen abstraction competes with the intramolecular CT process followed by effective deactivation.The phosphorescence spectra and lifetime at 77 K and the transient T1 -> Tn absorption and emission spectra of the model compounds at 20 deg C suggested that T1 is of pure (n,?*) state independent of the intramolecular CT character.It was found that benzophenonebisimides have the hydrogen abstraction rate constants no less than that of benzophenone (BP).