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Sodium hydroxide is a chemical compound with the formula NaOH. It is also known as lye and caustic soda. It is very strong and poisonous, especially when inhaled. It is found in many household products. It is a highly caustic base that can break down proteins and any ambient temperature and it is soluble in water. It is used in detergents, and the manufacturing of paper, soap, and even water. 60 million tonnes of it was manufactured, while use was at 51 million tonnes.