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

Substance: oxalic acid				Other Names: ethanedioic acid

Formula: C2H2O4					CAS-No.: 144-62-7 (anhydrous)

Study: uv absorption spectrum


Authors: R.A. Back

Title: The ultraviolet absorption spectrum of oxalic acid vapor

Journal/Source: Can. J. Chem., 62, 1414-1428, (1984); https://doi.org/10.1139/v84-241


Data: table, diagram

Energy/Wavelength range: 250 - 315 nm

Resolution: 

Temperature: ~ 373 K

Temperature dependence: no

Pressure/Concentration: 1-3 Torr

Phase: vapor

pH:


Comments: Low-resolution spectra show a moderately weak (epsilon(max) = 25 M-1 cm-1 at 277 nm) banded absorption
system beginning at about 310 nm and extending to 250 nm where a stronger absorption begins. Medium-resolution spectra
show a complex vibrational fine-structure at wavelengths above about 287 nm.

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