science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: heptafluorobutanal				Other Names: butanal, heptafluoro-; butyraldehyde

Formula: C4HF7O; C3F7CHO				CAS-No.: 375-02-0

Study: uv absorption spectrum, quantum yield


Authors: M.S. Chiappero, F.E. Malanca, G.A. Argüello, S.T. Wooldridge, M.D. Hurley, J.C. Ball, T.J. Wallington, R.L. Waterland, R.C. Buck

Title: Atmospheric chemistry of perfluoroaldehydes (CxF2x+1CHO) and fluorotelomer aldehydes (CxF2x+1CH2CHO): Quantification of the important role of photolysis

Journal/Source: J. Phys. Chem. A, 110, 11944-11953, (2006); DOI: 10.1021/jp064262k


Data: table, diagram

Energy/Wavelength range: 225 - 400 nm

Resolution: 1 nm

Temperature: 297 K

Temperature dependence: yes

Pressure/Concentration:

Phase: gas

pH:


Comments: The UV absorption spectra of CF3CHO, C2F5CHO, C3F7CHO, C4F9CHO, CF3CH2CHO, and C6F13CH2CHO were recorded over 
the range 225-400 nm at 249-297 K. There was no discernible (<5%) effect of temperature on the UV spectra.
Quantum yield at 254 nm is 0.63 ± 0.09 (C3F7CHO).

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