Sodium hydroxide is one of the most important
chemicals which are manufactured on large scale. It is commonly known as caustic
soda because of its caustic on corrosive action on the skin. Sodium hydroxide
is one of the strongest bases and its aqueous solution has high pH values.
Sodium hydroxide is manufactured by the electrolysis o a concentrated solution of sodium chloride (the solution is commonly known as brine) in a diaphragm cell.