Rheology phase reaction synthesis and thermal decomposition of magnesium phthalate dihydrate

Magnesium phthalate dihydrate was synthesized by rheological phase reaction. The crystal structure was determined by XRD. Its thermal decomposition mechanism in N2 was studied by TG DTA. The thermal decomposition products were characterized by XRD, GC–MS. The thermal decomposition of magnesium phthalate dihydrate in N2 proceeded in two stages; it first lost two crystal water to form anhydrate salt, then magnesium phthalate decomposed further, the last product was MgO. The organic compounds are mainly benzophenone and anthraquinone.