Caustic Soda

Manufacturing Process

Over 95% of production capacity of chlorine, and essentially 100% of the production capacity of caustic soda in its hydrated form, sodium hydroxide (NaOH) are based on the electrolysis of brine.

In this process the sodium chloride (NaCl, salt) in solution (brine) is electrolytically decomposed to elemental chlorine (anode compartment), and the solution of sodium hydroxide and hydrogen elements (cathode compartment).