Why Does Salt Melt Ice? The Science Explained
Salt melts ice through a process called freezing point depression. When salt is applied to ice, it dissolves into sodium and chloride ions that interfere with the ability of water molecules to bond and freeze. This lowers the freezing point of water, allowing ice to melt even when temperatures are below 32°F. The resulting saltwater, or brine, prevents refreezing and accelerates melting. While sodium chloride works best between 15°F and 25°F, alternatives like calcium chloride and magnesium chloride are more effective in colder conditions. Old Station Outdoor & Landscape Supply provides salt and eco-friendly de-icers for safe winter surfaces.
