the NaAlCl4 initially present at the start of the reaction may conform substantially with the stoichiometric formula,ie it comprises an equimolar mix of NaCl and AlCl3,thereby ensuring that the Na Cl employed is substantially will insoluble therein.however,even if the starting NaAlCl4 is AlCl3-rich,some of the Na Cl starting material will merely be taken up therein until stoichiometric proportions are reached.thereaffer,reactions(1)and(2)will ensure that these stoichiometric proportions are maintained.