science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2020 Substance: pyridazine Other Names: 1,2-diazine; o-diazine Formula: C4H4N2 CAS-No.: 289-80-5 PubChem: CID 9259 Study: uv absorption spectra, photolysis Authors: B. Samir, C. Kalalian, E. Roth, R. Salghi, A. Chakir Title: Gas-phase UV absorption spectra of pyrazine, pyrimidine and pyridazine Journal/Source: Chem. Phys. Lett., 751, 137469, (2020); https://doi.org/10.1016/j.cplett.2020.137469 Data: table, diagram Energy/Wavelength range: 220 - 380 nm Resolution: 0.2 - 0.5 nm Temperature: 353 ± 3 K Temperature dependence: no Pressure/Concentration: 0.08 – 0.5 Torr Phase: gas pH: Comments: The UV absorption spectra of three diazines (pyrazine, pyrimidine andpyridazine) were determined in the spectral domain 200–380 nm at 353 ± 3 K. Their UV absorption spectra showed two absorption bands. Author to whom correspondence should be addressed: (e-mail address):