Sodium carbonate - WikipediaSodium carbonate Na2CO3, is the water-soluble sodium salt of carbonic acid. It most . Soda ash is used as a water softener in laundering: it competes with the .. Large natural deposits found in 1938, such as the one near Green River,.soda ash natural,What is Soda Ash? - Industrial Minerals Association - North AmericaSoda ash, also known as sodium carbonate (Na2CO3), is an alkali chemical . (both referred to as natural soda ash), the mineral nahcolite (referred to as natural.