The behaviour of Al2(MoO4)3 towards AIVO4 in the subsolidus area, over the whole component concentration range, has been studied using the DTA and XRD methods. The
experimental results have been presented in the form of a phase diagram. It has been found that components of the system of
interest do not remain in equilibrium, and AlVO4−Al2(MoO4)3 system is not a real two-component system, even in the subsolidus area.