Barium Hydroxide Lime


Chemical information

Bario, cal con hidróxido de.
CAS — 17194-00-2 (anhydrous barium hydroxide); 12230-71-6 (barium hydroxide octahydrate).


In US.

USP 31

(Barium Hydroxide Lime). A mixture of barium hydroxide octahydrate and calcium hydroxide; it may also contain potassium hydroxide. White or greyish-white granules, or coloured with an indicator to show when absorptive power is exhausted. It absorbs not less than 19% of its weight of carbon dioxide. Store in airtight containers.


Barium hydroxide lime is used similarly to soda lime to absorb carbon dioxide in closed-circuit anaesthetic apparatus. Barium hydroxide lime contains a soluble form of barium and is toxic if swallowed. For the adverse effects and treatment of barium poisoning, see above.


Excessive drying out of barium hydroxide lime in anaesthetic apparatus, which may occur if oxygen flow through the equipment is left on for prolonged periods, can lead to the production of carbon monoxide and the risk of inducing carboxyhaemoglobinaemia in patients undergoing anaesthesia using the apparatus.1
1. Committee on Safety of Medicines/Medicines Control Agency. Safety issues in anaesthesia: volatile anesthetic agents and carboxyhaemoglobinaemia. Current Problems 1997; 23: 7. Also available at: dDocName=CON2023230&RevisionSelectionMethod= LatestReleased (accessed 14/07/06)
Published January 08, 2019.