science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: nitrous acid Other Names: HNO2 Formula: HONO CAS-No.: 7782-77-6 Study: UV absorption cross sections, photolysis, quantum yields Authors: H.S. Johnston, R. Graham Title: Photochemistry of NOx and HNOx compounds Journal/Source: Can. J. Chem., 52, 1415-1423, (1975) Data: table, diagram Energy/Wavelength range: 300 - 400 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: vapor pH: Comments: Cross sections for absorption of radiation between 190 and 700 nm are given for N2O, NO2, NO3, N2O4, N2O5, HNO2, and HNO3. The quantum yields and the primary products of photolysis of each of these substances are discussed. Author to whom correspondence should be addressed: (e-mail address):