Refractive Index Calculator
Refractive indices of H2SO4/HNO3/H2O solutions to stratospheric temperatures


Java programming by Dora Farkas
This page offers a model which uses the Lorentz-Lorenz relation to estimate the refractive index of aqueous H2SO4 and HNO3 solutions (5-70 wt%) for wavelengths from the near ultraviolet to the near-infrared (250-2000 nm) and for the temperatures from 370 K to stratospheric temperatures (185 K). The molecular refractivities of the involved species are based on data of the binary solutions at room temperature. For extrapolation to low temperatures a careful estimate of the density of the ternary solutions has been performed. The accuracy of the model is predicted to be better than 0.15 % (see abstract)

To run this model you have to have a Web Browser which supports Java 1.1.2. If you only see a grey square next to this text then you better select the-not-so-flashy-JavaScript version that runs with older browsers like Netscape Navigator 3.0. The Java source code can be found here.

contact: Beiping Luo, Ulrich Krieger


last updated 30-OCT-2001
Christian Braun