Sodium Hydroxide 50%, also known as Caustic Soda Liquid, is a 50% solution that is produced by the electrolysis of an aqueous salt solution with formula NaOH. Sodium Hydroxide is a strong base and is often used to regulate pH levels in various types of formulations. As an industrial commodity, it is used in many industries such as the manufacturing of soaps and detergents, textiles and water treatment. Certified by the National Sanitation Foundation (NSF) for the ANSI/NSF-60 standard at a maximum use level in drinking water of 200 mg/L.