The vapor pressure and P-V-T properties for 1,1,2,2,3-pentafluoropropane (R-245ca), an ozone-friendly refrigerant, were measured using a constant volume apparatus. Measurements were carried out at temperatures from 258 K to 364 K and at pressures from 16 kPa up to 573 kPa. The 39 measurements in the vapor pressure region were fitted with the Wagner equation. The 34 experimental P-V-T measurements in the superheated vapor region, taken along 5 isochores, were regressed to the virial equation of state in the Leiden form truncated after the second term. Consistency of the derived second virial coefficients was shown with Tsonopoulos' correlating method. The experimental findings were also compared with published data.