[quote=@Ceta de Cloyes]
 The question is would I then be able to go with the standard waterbender package of manipulating water into ice? Sharpening it into blades thin enough to cut? 
[/quote]

Yep, though keep in mind Ice isn't the mono-katana in terms of it's cutting edge. It wont pierce or cut everything

[quote=@Ceta de Cloyes]
 What about other liquids like alcohol or idk tranquillizer fluids? 
[/quote]
You're going to have to be specific on your intent for their uses, are you wanting to freeze them? I don't know from your initial paragraph what you want to use them for.

[quote=@Ceta de Cloyes]
 I can think of some pretty fun uses of slinging highly flammable substances around in a firefight 
[/quote]
This would work well if you had a firepartner buddy but alone it seems impractical.