Keep Flames at Bay
Considering how salt has such a high melting point, large amounts of it can actually put out fires. This one is more for people with fireplaces (or maybe if you want to put out a bonfire). You can extinguish the flames by dumping salt on them. The fire will go out pretty quickly, and cleaning up will be a lot easier.
Source: newslinq.com
Now, if you ever encounter a grease fire in the kitchen, pour salt on it instead of water. For anyone who has ever put a hot greasy pan under the tap, it only makes things worse. Pouring water only spreads the oil further, and if there are flames, it will spread the fire. Use salt or baking soda to lower flames on a grill or a frying pan.