Citrosol® 503 (022300) is a 50% aqueous citric acid solution, ideal for industrial applications that don't require USP or FCC grade. It is effective in non-phosphate liquid detergents due to its ability to sequester calcium, magnesium, and iron. It also serves in hard surface cleaning and metal oxide removal in power plant boilers. Additionally, it cleans and passivates steel equipment in industries such as construction and electronics.