This paper reports the measured solubilities of decane in a mixture of methane (85 mol%) and nitrogen (15 mol%) at temperatures between 263 and 311 K and at pressures up to 10 MPa. The decane concentrations varied between mole fractions of 1.0 x 10(-5) and 1.5 x 10(-3). The measurements were performed using the gas saturation technique. The results were obtained with a reproducibility better than 5%.