Soda Ash Light is a sodium carbonate variant that has a low density. It is used widely in many industries to make detergents, soaps, and other sodium compounds. An odorless, white powder is soda ash. detergents, chemicals, soaps, clothing, paper, food, and other sodium compounds for the oil refining industry and other uses. This regulates the pH in a number of industrial operations. Soda Ash Light is a crucial component of water softening and a highly effective source of alkalinity reserve.