Aqueous solution of sodium chloride is called Brine.
What is Brine?
It is a high-concentration solution of salt (NaCl) in water (H2O). In various circumstances, brine may refer to salt solutions varying from about 3.5% (a standard concentration of seawater, on the lower end of solutions used for brining foods) up to about 26% (a typical saturated solution, depending on temperature).
Lower levels of concentration of the solution are called by diverse names like freshwater, brackish water, and saline water.
- Brine naturally occurs on the Earth’s surface (salt lakes), crust, and within brine pools on ocean bottom.
- High-concentration brine lakes typically emerge due to evaporation of ground saline water on high ambient temperatures.
Brine has various applications. Some of the applications are listed below
- Used as a preservative in meat-packing (as in corned beef) and pickling.
- Used in refrigeration and cooling systems, brines are used as heat-transfer media because of their low freezing temperatures or as vapour-absorption agents as it exhibits low vapour pressure.
- It is also used to quench (cool) steel.