Chemtex manufactures Citric Acid works as an effective chelating agent, an acidifier and a descaler, used in removing lime scale from boilers and evaporators and can also be used in dissolving rust from steel. Key Features and Benefits Serves as an efficient descaling agent Acts as an excellent chelating agent Used for the removal of lime scale from boilers and evaporators Serves as a major ingredient in soaps and laundry detergents