science-softCon uv/vis+ spectra data base;	www.uv-spectra.de, (C) science-softCon 2019

Substance: formaldehyde				Other Names: methanal; methylene oxide

Formula: CH2O					CAS-No.: 50-00-0

Study: UV absorption cross sections


Authors: C. A. Smith, F. D. Pope, B. Cronin, C. B. Parkes, A. J. Orr-Ewing

Title: Absorption Cross Sections of Formaldehyde at Wavelengths from 300 to 340 nm at 294 and 245 K

Journal/Source: J. Phys. Chem. A, 110 (41), 11645 -11653, (2006); DOI: 10.1021/jp063713y


Data: diagram, table

Energy/Wavelength range: 300 - 340 nm

Resolution: 0.0035 nm

Temperature: 245 K, 294 K

Temperature dependence: yes

Pressure/Concentration:

Phase: gas

pH:


Comments: Absorption cross sections are reported at two temperatures, 294 and 245 K and at a spectral resolution 
of 0.0035 nm (0.35 cm-1). At this resolution, greater peak absorption cross sections are obtained for many of the sharp 
spectral features than were previously reported. The overall magnitudes of peak absorption cross sections are largely 
unaffected by the added pressure of nitrogen, but a modest degree of pressure broadening (0.2-0.3 cm-1 atm-1) is evident 
in the line shapes.

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