A chemical sodium carbonate (Na2CO3), produced by reacting sodium chloride and limestone, is commonly known as soda ash.
Soda ash has a number of chemical properties and one of the important properties is that it a basic i.e. an alkaline compound. It can be used as a pH regulator for a number of processes such as raising the pH of a swimming pool.
It is also a good electrolyte and can make a good conductive solution when add to water.