An apparatus for determining the purity of organic compounds

An apparatus is described for determining with an accuracy of 10 per cent the total amount of impurities in small (0.05 cm³) samples of organic compounds, containing more than 98 mole per cent of the main component. A simple method for calculating the degree of purity, applicable to Skau's method, is proposed. A correction for the heat of melting of eutectic mixtures formed by the main component with impurities is introduced.