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.

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