A new proposal for assignment criteria of the oxidizers into 5.1 class and packaging categories of IMDG Code

Abstract

Derivatographic tests (based on DTA method) were carried out on wood flour - oxidizer mixtures to determine new criteria for assignment of the oxidizers to the class 5.1 and appropriate packaging categories of IMDG Code. It was demonstrated that DTA method can be applied to elaborating the criterion of classification of oxidizing substances into 5.1 class and appropriate packaging categories on the basis of the temperature change and time value for a reactive mixture after its selfignition. As the criterion the temperature change rate, in °C/s, counted from the self-ignition instant to that of obtaining the maximum temperature value, is proposed. On the basis of the criterion new principles of classifying the oxidizers and assigning to them a packaging category were formulated.