science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: pyridazine Other Names: 1,2-diazine Formula: C4H4N2 CAS-No.: 289-80-5 Study: uv absorption spectrum, photolysis, quantum yields Authors: J.R. Fraser, L.H. Low, N.A. Weir Title: Photolysis of Pyridazine in the Gas Phase Journal/Source: Can. J. Chem., 53, 1456-1460, (1975) Data: diagram, table Energy/Wavelength range: 200 - 380 nm Resolution: Temperature: 368 K Temperature dependence: no Pressure/Concentration: 23 Torr Phase: gas pH: Comments: Pyridazine was photolyzed with long wave ultraviolet radiation (3650-3663 A) over the temperature range 100-160 °C. Nitrogen and vinylacetylene were the main products, their quantum yields at 110 °C being 0.12 ± 0.05 and 0.09 ± 0.04, respectively. Author to whom correspondence should be addressed: (e-mail address):