The chlor-alkali is an industrial process for the electrolysis of NaCl.
It is the technology used to produce chlorine and sodium hydroxide
(caustic soda), which are commodity chemicals required by industry.
KALF design the process is conducted on a brine (an aqueous solution of NaCl),
in which case NaOH, hydrogen, and chlorine result. When using calcium
chloride or potassium chloride, the products contain calcium or potassium
instead of sodium. Related processes are known that use molten NaCl
to give chlorine and sodium metalor condensed hydrogen chloride to give
hydrogen and chlorine.