Fourteen organic compounds, 1-pentene, 2-methylbutane, 2-methyl-1,3-butadiene (isoprene),n-pentane, 2-chloropropane, ethyl alcohol, 2,2,4-trimethylpentane,n-hexane,n-hepatane, 1,3-difluorobenzene, 1,2-dichloroethane, hexafluorobenzene, cyclohexane and diphenyl ether, as new reference materials
for energy and temperature calibrations of differential thermal analysers (DTA) and differential scanning calorimeters (DSC)
in the temperature range 100–300 K, were investigated. The purities, triple point and transition temperatures, fusion and
transition enthalpies of these compounds were measured using a low-temperature DTA apparatus developed by the CTM of the CNRS
in Marseille. The results obtained were compared with those produced by adiabatic precision calorimetry. Our data are in good
agreement with literature values. Enthalpies of fusion and transition, triple point and transition temperatures are reproduced
within ±1% and ±0.1K, respectively.