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: R.J. Barnes, M. Lock, J. Coleman, A. Sinha

Title: Observation of a New Absorption Band of HOBr and Its Atmospheric Implications 

Journal/Source: J. Phys. Chem., 100 (2), 453-457, (1996); DOI: 10.1021/jp952445t


Data: table, diagram

Energy/Wavelength range: 380 - 600 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration.

Phase: vapor

pH:


Comments: A new absorption band of HOBr centered near 440 nm is detected by monitoring the yield of OH 
radicals as the wavelength of an excitation laser is scanned over the region from 440 to 650 nm. 
The band is believed to arise from excitation to a triplet state of HOBr, and although its peak absorption cross 
section is fairly modest, max ~ 9 x 10-21 cm2.

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