Thermal expansion of α-trinitrotoluene from 77 to 273 K
- 15 September 1974
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 61 (6) , 2346-2350
- https://doi.org/10.1063/1.1682313
Abstract
Relative length changes in orthorhombic crystals of α‐TNT have been measured from 77 to 273 K. Using a three‐terminal capacitance technique, length changes were measured with a resolution of 10−9 cm under optimum conditions. Relative temperature changes of 1 part in 105 were detected with a platinum resistance thermometer used as one arm of an ac resistance bridge. The linear expansion coefficient calculated from these data is found to have a second‐order transition with a critical temperature, Tc = 211.7 K. Mangelsdorf plots indicate logarithmic behavior of the linear expansion coefficient along all crystalline axes for the temperature intervals 203 K < T < Tc and 223 K < T < Tc. The volume expansion coefficient was obtained from the three linear expansion coefficients.Keywords
This publication has 3 references indexed in Scilit:
- Highly Sensitive Capacitive Pressure GaugeReview of Scientific Instruments, 1969
- Observation of a solid-solid polymorphic transformation in 2,4,6-trinitrotolueneThe Journal of Physical Chemistry, 1969
- X-ray studies of 2,4,6-trinitrotolueneActa Crystallographica, 1954