Screening Test of Evaluation Thermal Hazard for H2O2 by DSC

Abstract

The oxidizing material is substance that can deliver oxygen other substance without the combustion. The hydrogen peroxide (H₂O₂) easily decomposes at ambient temperature. In the present study, it is aimed to thermal hazard of hydrogen peroxide. The thermal data of onset temperature, peak temperature and enthalpy of reaction of hydrogen peroxide at 50% ww⁻¹ for commercial grade was tested by differential scanning calorimetry (DSC). The increasing of heating rate in the range of 3-7 °Cmin⁻¹ increases the onset temperature from 63.4-86.3 °C, respectively. The activation energy of hydrogen peroxide was 77.1 kJmol⁻¹. The adiabatic decomposition temperature rise and the time-to-maximum rate were 394.9 K and 21.6 seconds, respectively. It can be described that 50 % ww⁻¹ of hydrogen peroxide, themselves is highly oxidizing hazardous material. The storage, transportation and usage must be done very carefully by persons, which have own in chemicals.