What is road salt made from?

Road salt is used to melt snow and ice and keep water from freezing. Here is an explanation of what road salt is made of and how it works. read more

Road salt is made from rock salt that is derived from underground mines and crushed. The rock salt is treated with an anti-caking agent for optimal effectiveness. Rock salt is coarser than table salt, but is still made from sodium chloride. read more

Answer: Road salt is halite, which is the natural mined mineral form of table salt or sodium chloride (NaCl). While table salt has been purified, rock salt contains mineral impurities, so road salt typically is brownish or gray in color. Machines mine the salt, which is crushed and packaged for delivery. read more

How Road Salt Works. Road salt works by lowering the freezing point of water via a process termed freezing point depression. In a nutshell, the salt breaks into its component ions in a small amount of liquid water. The added particles make it more difficult for the water to freeze into ice, lowering the freezing point of the water. read more

Road salt is halite, which is the natural mined mineral form of table salt or sodium chloride (NaCl). Table salt is purified, rock salt contains mineral impurities, so it is typically brownish or gray in color. read more