Synonyms: Sodium oxidanide, Caustic soda, Lye, Ascarite, White caustic, Sodium hydrate

CAS: 1310-73-2

Sodium hydroxide is a white solid, a salt (ionic compound), consisting of sodium cations Na+ and hydroxide anions OH−. Sodium hydroxide is a highly caustic base and alkali, that decomposes proteins at ordinary ambient temperatures and may cause severe chemical burns. It is highly soluble in water and readily absorbs moisture and carbon dioxide from the air. Sodium hydroxide is used in many industries in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents and as a drain cleaner.