science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: nitrous acid Other Names: dioxonitric(III) acid Formula: HNO2; HONO CAS-No.: 7782-77-6 Study: uv absorption cross sections Authors: P. Pagsberg, E. Bjergbakke, E. Ratajczak, A. Sillesen Title: Kinetics of the gas phase reaction OH + NO (+M) --> HONO (+M) and the determination of the UV absorption cross sections of HONO Journal/Source: Chem. Phys. Lett., 272, 383-390, (1997); http://dx.doi.org/10.1016/S0009-2614(97)00576-9 Data: table, diagram Energy/Wavelength range: 320 - 400 nm Resolution: 0.4 nm; 0.2 nm Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: gas pH: Comments: The UV spectrum of HONO was recorded in the range 320-400 nm and an absolute absorption cross section of sigma = (5.02 ± 0.76) × 10-19 cm2 molecule-1 has been determined for the strongest band of HONO located at 354.2 nm. Differential absorption cross sections to be used for field measurements of HONO were also investigated. Author to whom correspondence should be addressed: (e-mail address):