science-softCon uv/vis+ spectra data base; www.uv-spectra.de, (C) science-softCon 2018 Substance: butenedial Other Names: malealdehyde; 2-butenedial Formula: C4H4O2 CAS-No.: 2363-83-9 PubChem: Study: uv absorption spectrum Authors: D.L. Hufford, D.S. Tarbell, T.R. Koszalka Title: Maleic and Fumaric Dialdehydes, Delta4-Tetrahydrophthalaldehyde and Related Compounds Journal/Source: J. Am. Chem. Soc., 74 (12), 3014-3018, (1952); DOI: 10.1021/ja01132a018 Data: diagram, table Energy/Wavelength range: 200 - 460 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: solution (iso-octane) pH: Comments: The sample was mainly the trans-isomer. The spectrum showed two absorption bands, one peaked at 225 nm (epsilon = 17000 cm-1) and the other peaked at 354 nm (epsilon = 70 cm-1). Author to whom correspondence should be addressed: (e-mail address):