The experimental VLE data of binary system (1,2-propanediol + 1,3-propanediol) at sub atmospheric pressures.

n_D and ρ data of the binary mixture of (1,2-propanediol + 1,3-propanediol) at temperatures from (298.15 to 318.15) K.

Lorentz–Lorentz equation for the estimation of molar refractivity, R_m, using refractive index and molar volume, V_m.

Calculated class="mathmlsrc">title="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0021961416000410&_mathId=si1.gif&_user=111111111&_pii=S0021961416000410&_rdoc=1&_issn=00219614&md5=331f732d590c4cad0db4eacb50e4008e">class="imgLazyJSB inlineImage" height="20" width="22" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0021961416000410-si1.gif">class="mathContainer hidden">class="mathCode">$V_{\text{m}}^{\text{E}}$, and class="mathmlsrc">title="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0021961416000410&_mathId=si2.gif&_user=111111111&_pii=S0021961416000410&_rdoc=1&_issn=00219614&md5=e9df5d8e143ab6f545ba4a6543b1c4ef">class="imgLazyJSB inlineImage" height="19" width="18" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0021961416000410-si2.gif">class="mathContainer hidden">class="mathCode">${\overline{V}}_{\text{i}}^{\text{E}}$, and correlated with the four-parameter Redlich–Kister polynomial equation and PFP theory.

A comparative study of different mixing rules for predicting refractive index values.