Fluoride-based molten salts are used as the principal coolant in Molten Salt Reactors (MSRs), a type of nuclear fission reactor. These salts, such as lithium-beryllium fluoride and lithium fluoride, stay liquid without the need for pressurisation at temperatures ranging from 500°C to 1100°C. This is in sharp contrast to Pressurised Water Reactors (PWRs), which run at around 315°C and 150 atmospheres of pressure. MSRs have received global attention, with countries including India, the United States, Germany, France, and China, among others, strongly exploring their development.