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Évaluation de la stabilité thermique et danger d’incendie des méthoxydes de sodium et de potassium

Abstract : Sodium and potassium methoxides are used as an intermediary for a variety of products in several industrial applications. Current production of so called “1G-biodiesel” processes implies the use of methanol, caustic potash (KOH), and caustic soda (NaOH) for which the hazards are well characterized. The more recent introduction of the direct catalysts CH3OK and CH3ONa may potentially introduce new process hazards. From an examination of existing MSDSs concerning these products, it appears that no consensus currently exists on their intrinsic hazardous properties. INERIS and the CERL (Canada) have embarked upon a joint effort to better characterize the thermal hazards associated with these catalysts. This work employs the more conventional tests for water reactivity as an ignition source, and fire and dust explosion hazards, using isothermal nano-calorimetry, isothermal basket tests, the Fire Propagation Apparatus and a standard 20 L sphere, respectively. It was found that these chemicals can become self-reactive close to room temperature under specific conditions and can generate explosible dusts.
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  • HAL Id : ineris-01869450, version 1



Guy Marlair, Agnès Janes. Évaluation de la stabilité thermique et danger d’incendie des méthoxydes de sodium et de potassium. Rapport Scientifique INERIS, 2013, 2012-2013, pp.12-14. ⟨ineris-01869450⟩



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