How to obtain barium hydroxide

I am trying to perform the demonstration of a strongly endothermic reaction reacting barium hydroxide with ammonium nitrate. I have been scouring the web for ways to get barium hydroxide, but none have showed any promise. The only way I have seen to obtain it is by heating the nitrate to decomposition and reacting the oxide with water. I would rather avoid this as I have no way to deal with the nitrogen dioxide gas that would result.




You can buy barium hydroxide. See the listing from [Flinn Scientific](http://www.flinnsci.com/store/Scripts/ck_prodList.asp) although Flinn is by no means the only seller. However, Flinn's safety information is written at a very accessible level.


 1