Azide, dilute in Water, PBS, DMSO? - (Apr/19/2007 )

Dear All,
I want prepare Azide from Sodium azide. We have a powder. Should I dissolve it in Water, PBS, DMSO, any ideas??
Thanks in advance

Water, unless you use it for chemical reactions.

Be careful with disposal. Azides react with many metals to form explosives. Copper pipes are a problem, for example.