Thermal Decomposition of MHs

MH has been used as a flame retardant due to its ability to undergo endothermic dehydration in fire conditions, which can be described as follows  

The decomposition of MH starts at about 300 °C, the associated endotherm is about 1450 Jg and 30.8% H2O is released during the decomposition of As expected, the water release decreases the temperature and dilutes oxygen and flammable gases near the flame. Also, the product, MgO, acts as a barrier to minimize any further combustion and decomposition of the flammable polymer. 

Chen et alf investigated the thermal decomposition kinetics and mechanism of MH at high temperature (973-1123 K). They found that the apparent activation energy and reaction order of the thermal decomposed reaction are 50.9kJmol and 0.55, respectively. 

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