Static dielectric constant of ordinary water substance

To process this page used the WaterSteamPro function "wspDCRT": static dielectric constant of ordinary water substance [-] as function of density r [kg/m3], temperature t [K].

Function is based upon the "Release on the Static Dielectric Constant of Ordinary Water Substance for Temperatures from 238K to 873K and Pressures up to 1000 MPa", 1997 from IAPWS. The range of validity is from 238 to 273K in the metastable liquid at atmospheric pressure (0.101325 MPa); from 273 to 323 K at pressures up to the lower of the ice IV melting pressure or 1000 MPa; above 323 K at pressures up to 600 MPa. The formulation also extrapolates smoothly up to at least 1200 K and 1200 MPa.

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