Author(s)

Miyako Akiyoshi^*, Ken Okada, Shu Usuba, Takehiro Matsunaga

Explosion Safety Research Group, Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.

Differential scanning calorimetry (DSC) provides easy screening for thermal hazard evaluation. Here, we investigate the difference between using glass and stainless-steel vessels on the DSC measurement of exothermic decomposition energy (Q_DSC) for 41 chemical substances (containing nitro, halogen, peroxide, and sulfur groups, and hydrazine bonds). Two borosilicate glass vessels (capillary and ampule) and one stainless-steel vessel were used. All Q_DSC values obtained were investigated with reference to the permissible fluctuation range specified by the ASTM (American Society for Testing and Materials) international Both glass vessels produced very similar Q_DSC values, despite different sample scales. The Q_DSC values obtained with the glass vessels were generally roughly within the variation tolerance range of the stainless-steel vessel. Notable exceptions were halogen- or sulfur-containing compounds; these exhibited smaller Q_DSC values with glass vessels in almost all cases. We will investigate whether certain structures in compounds react with stainless steel. The vessel material choice is crucial in evaluating the true reactivity of a substance.

Differential Scanning Calorimetry, Glass Vessel, Stainless-Steel Vessel, Exothermic Decomposition Energy, United Nations Recommendations

Akiyoshi, M. , Okada, K. , Usuba, S. and Matsunaga, T. (2017) Comparison between Glass and Stainless-Steel Vessels in Differential Scanning Calorimetry Estimation. American Journal of Analytical Chemistry, 8, 19-34. doi: 10.4236/ajac.2017.81002.