It is in soarte fan anorganyske ferbining, ek wol bekend as caustic soda, caustic soda, caustic soda, natrium hydroxide hat sterke alkaline, ekstreem corrosive, kin brûkt wurde as acid neutralizer, mei masker agent, precipitating agent, delslach maskering agent, kleur agent, saponification agent, peeling agent, detergent, ensfh, it gebrûk is hiel breed.