In the event of a hypothetical core disruptive accident in nuclear power plants, the molten core may flow out the reactor vessel and interact with the cold water. The evolution of the accident is strongly affected by the fragmentation of the jet of molten metallic fuel due to its interaction with the water (i.e. this situation is known as fuel coolant interaction, FCI). In order to evaluate and predict the various consequences of a FCI, many researches are conducted with either corium or high melting temperature molten metal, where premixing stage evolves with an important production of steam. This steam production, that is unavoidable because of the high temperature of corium, leads to difficulties in using optical diagnostics. Hence, a eutectic alloy (Field’s metal) with a low melting point (62℃) is used in order to be able to visualize correctly the droplet fragmentation processes. The present work focuses on the fragmentation of a single molten alloy droplet with mass ranging from 10 to 25g. The liquid droplet interacts with a water pool at instantaneous contact interface temperature between 50℃ to 90℃. According to its Weber number, it will be fragmented in different ways. A drop-on-demand device was designed and built for this purpose. For each experiment, a single droplet has been visualized using a high-speed camera (at 8000 fps). All measurements (drop size, velocity, impact parameter and geometrical properties of the drops after the penetration) into the pool are evaluated using an open source image processing. The analysis of the different tests has shown that solidification doesn’t seem to have much influence on the first stage of droplet deformation and fragmentation. We assume that the reason is a weak influence of temperature on viscosity when the temperature is above the melting point, and a very quick solidification thanks to supercooling of the drop.