A study on the physical constants of a number of alkanes and cycloalkanes: II. Additive and constitutional influences on molecular refraction, dispersion and parachor

Values of the molecular refraction, calculated according to the formulae of Lorentz‐Lorenz or of Gladstone‐Dale are given for five different wave lenghts for a number of normal and branched alkanes and for a number of cyclanes. Additive and constitutional influences on molecular refraction and parachor are discussed. Exact values for the refraction equivalents of CH2C and H are given. Dispersions, specific and molecular dispersions have been calculated; the influence of homology and isomerism on the dispersion magnitudes is discussed. The temperature coefficients of the specific gravities and of the refractive indices (λ = 5876) have been calculated.