science-softCon uv/vis+ spectra data base;	www.uv-spectra.de, (C) science-softCon 2010

Substance: nitrous acid			Other Names: 

Formula: HONO				CAS-No.: 7782-77-6

Study: uv absorption cross section, quantum yield


Authors: R.A. Cox, R.G. Derwent

Title: The ultraviolet absorption spectrum of gaseous nitrous acid

Journal/Source: J. Photochem., 6, 23-34, (1976/1977); doi:10.1016/0047-2670(76)87004-9 


Data: (diagram, table, disk): table

Energy/Wavelength range: 200 - 400 nm

Resolution: 

Temperature: 295 K

Temperature dependence: 

Pressure/Concentration:

Phase (gas, lquid, solid): gas

pH:


Comments: The ultra-violet absorption spectrum of gaseous nitrous acid was quantitatively examined over the wavelength 
range 200 - 400 nm. In addition to the diffuse bands between 310 and 380 nm previously reported in the literature, an intense, 
broad absorption maximum was found at 215 nm. 
The quantum yield of OH radical production from the photolysis of nitrous acid at 365 ± 5 nm was found to be (0.92 ± 0.16).

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