science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: water Other Names: Formula: H2O CAS-No.: 7732-18-5 Study: UV/Vis absorption spectrum Authors: F.M. Sogandares, E.S. Fry Title: Absorption spectrum (340-640 nm) of pure water. I. Photothermal measurements Journal/Source: Applied Optics, 36 (33), 8699-8709, (1997); http://dx.doi.org/10.1364/AO.36.008699 Data: table, diagram Energy/Wavelength range: 340 - 640 nm Resolution: Temperature: 298 K Temperature dependence: Pressure/Concentration: Phase: liquid pH: Comments: The authors measured the absorption spectrum (340–640 nm) of the purest available water with photothermal deflection spectroscopy. The spectrum exhibits an absorption minimum in the blue region of the spectrum that is deeper than in most previously documented pure-water absorption studies. The authors find the minimum in the absorption spectrum of pure water is 0.0062 ± 0.0006 m-1 at 420 nm and 25 °C. Author to whom correspondence should be addressed: (e-mail address):