Liquid metals can be used as efficient heat transfer fluids for applications with high heat loads and medium to high temperatures. Due to their low melting points, some Ga-based alloys are liquid at room temperature and offer therefore various usages in technical applications. For designing such equipment, knowledge of thermophysical properties is essential. In this publication, specific thermophysical properties of the near eutectic liquid Ga-In-Sn alloy are
presented. The temperature dependent density, the specific heat capacity at constant pressure as well as the thermal conductivity are determined experimentally.