Zc. Tan et R. Sabbah, REFERENCE MATERIALS FOR ENERGY AND TEMPERATURE CALIBRATIONS OF DTA AND DSC INSTRUMENTATION IN THE RANGE 100-300 K, Journal of thermal analysis, 41(6), 1994, pp. 1577-1592
Fourteen organic compounds, 1-pentene, 2-methylbutane, 2-methyl-1,3-bu
tadiene (isoprene), n-pentane, 2-chloropropane, ethyl alcohol, 2,2,4-t
rimethylpentane, n-hexane, n-heptane, 1,3-difluorobenzene, 1,2-dichlor
oethane, hexafluorobenzene, cyclohexane and diphenyl ether, as new ref
erence materials for energy and temperature calibrations of differenti
al 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 entha
lpies of these compounds were measured using a low-temperature DTA app
aratus developed by the CTM of the CNRS in Marseille. The results obta
ined were compared with those produced by adiabatic precision calorime
try. Our data are in good agreement with literature values. Enthalpies
of fusion and transition, triple point and transition temperatures ar
e reproduced within +/-1% and +/-0.1 K, respectively.