# Why is brine solution more effective than granular salt in melting ice on a surface?

Why is a brine solution consisting of a small fraction of salt in water, more effective in melting ice on a surface, than just pure salt?

• greater surface area in contact with the ice. – MaxW Jan 8 '17 at 19:20

Secondly, salt dissolution is an endothermic process, so it will further reduce the temperature of the surroundings. For example, if you have an ice and water solution and add salt crystals you can bring the temperature of the ice/water combination to a much lower temperature (even below $$\pu{-10^\circ C}$$!).