The bulk Ca 2 CrO 4 samples were synthesized under high pressure and high temperature conditions using CaO and CrO 2 as starting materials. The structure of the prepared Ca 2 CrO 4 solid is characterized by X-ray diffraction with Rietveld refinement as tetragonal structure with the space group I4 1 /acd. The CrO 6 octahedrons elongate along c axis and rotate in ab plane. DC and AC magnetic susceptibility measurement results indicate spin glass behavior at low temperature. Temperature dependence of resistivity measurement results show Ca 2 CrO 4 is an insulator at both ambient condition and high pressure. C 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license