Towards the characterization of the genuine thermal and fire hazards of ionic liquids

Abstract : As a novel class of solvents, ionic liquids have properties that make them promising key chemicals for the future bio-based economy. However, safety performance of ionic liquids relating physico-chemical hazards is very rarely investigated as they are often perceived as a non existing issue due to the status of ionic liquids in regulatory flammability hazard ranking systems. Limitations of conventional hazard rating in the case of ionic liquids lead to misleading statements pertaining physico-chemical hazards given the wide range of chemicals under interest (~10 18), while by contrast safety is of paramount importance as a goal in green chemistry principles. Thus, it becomes important to go beyond conventional hazard rating and therefore we promote the development of a dedicated methodology from hazard identification to contextual risk assessment, as illustrated in figure 1. For that purpose, work has been focused here to qualify fire hazard profiles of ionic liquids by use of both experimentation (oxygen bomb calorimetry, pyrolysis combustion flow calorimetry and fire propagation apparatus) and predictive tools using molecular modelling. The results of our study in particular provide: mutual support of these experimental methods, advanced pertinent knowledge on the actual fire hazards of ionic liquids, valuable data on heats and products released by such chemicals in fire conditions.
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Conference papers
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  • HAL Id : ineris-00971163, version 1
  • INERIS : EN-2013-148

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Alpha-Oumar Diallo, Alexander B. Morgan, Christophe Len, Guy Marlair. Towards the characterization of the genuine thermal and fire hazards of ionic liquids. 2. International symposium on green chemistry "renewable carbon and eco-efficient processes" (ISGC 2), May 2013, La Rochelle, France. ⟨ineris-00971163⟩

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