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

Substance: n-pentanal					Other Names: n-valeraldehyde; valeral

Formula: C5H10O; CH3(CH2)3CHO				CAS-No.: 110-62-3

Study: photolysis, uv absorption spectrum


Authors: T. Cronin, L. Zhu

Title: Dye laser photolysis of n-pentanal from 280 to 330 nm

Journal/Source: J. Phys. Chem. A, 102, 10274-10279, (1998); DOI: 10.1021/jp982487s


Data: diagram, table

Energy/Wavelength range: 280 - 330 nm

Resolution: 5 nm

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration:

Phase:

pH:


Comments: The UV photolysis of n-pentanal in the 280-330 nm region has been studied in 5-nm intervals by using dye laser 
photolysis in combination with cavity ring-down spectroscopy. Absorption cross sections of n-pentanal were measured at each 
wavelength studied. n-Pentanal exhibited a broad, structureless absorption band similar, in appearance, to that of previously 
studied short-chain aldehydes. The absorption spectrum peaked at 295 nm with a cross section of (6.56 ± 0.17) × 10-20 cm2 molecule-1.
The HCO yields were 0.058 ± 0.006, 0.095 ± 0.009, 0.10 ± 0.02, 0.14 ± 0.01, 0.10 ± 0.02, 0.15 ± 0.02, 0.14 ± 0.02, 0.20 ± 0.06, 
0.14 ± 0.02, 0.085 ± 0.034, 0.087 ± 0.015 at 280, 285, 290, 295, 300, 305, 310, 315, 320, 325, and 330 nm.

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