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

Substance: hypobromous acid				Other names:

Formula: HOBr						CAS-No.: 13517-11-8

Study: uv absorption spectrum


Authors: T. Ingham, D. Bauer, J. Landgraf, J.N. Crowley

Title: Ultraviolet-visible absorption cross sections of gaseous HOBr

Journal/Source: J. Phys. Chem. A, 102, 3293-3298, (1998); DOI: 10.1021/jp980272c


Data: table, diagram

Energy/Wavelength range: 260 - 600 nm

Resolution: 1 nm

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 80 or 300 Torr of He bath gas

Phase: gas

pH:


Comments:The UV-visible absorption cross sections for HOBr between 260 and 545 nm have been measured at 295 K in 
either 80 or 300 Torr of He bath gas. The UV-visible spectrum of HOBr consists of three broad absorption bands between 
about 240 and 550 nm, with lambda(max) at 284 nm (sigma = (25.0 ± 1.2) × 10-20 cm2), 351 nm (sigma = (12.4 ± 0.6) × 10-20 cm2), 
and 457 nm (sigma = (2.3 ± 0.2) × 10-20 cm2). The existence of the third, long-wavelength absorption band has been confirmed 
unambiguously in this work.

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