Soda lime is a mixture of NaOH & CaO chemicals, used in granular form in closed breathing environments, such as general anaesthesia, submarines, rebreathers and recompression chambers, to remove carbon dioxide from breathing gases to prevent CO2 retention and carbon dioxide poisoning.
S 1587 (OTTO) Sodalime, GR Cas 8006-28-8 - used to absorb carbon dioxide in basal metabolism tests, submarines, rebreathing anesthesia systems and in carbon determinations.