How Do Ice Melters Work?
We do the hard work so you can rest easy. How ice melters work is dependent mainly on temperature and the ice melting compounds being used. For any ice melter to work, it must first dissolve in water to build a brine.
Above 20°F, all ice melters can begin dissolving in water that’s already present in snow and slush.
Above 10°F, some ice melting compounds, such as sodium chloride (rock salt), potassium chloride or urea, can still find some water to start the brine process. However, these ice melters rely only on sunlight or warmed surfaces to help with melting.
Below 5°F, water is no longer able to form a brine, and many ice melters become ineffective. However, there are formulas that do work at these temperatures.