Did a quick hunt on-line.

The only place I found selling D2O was a chemical company in Thailand selling D2O for roughly $110US for 100ml, or roughly $4200US per US gal.

Hmmm, cheap!

If you want a low temp liquid coolant get some CO2. Before you flame me saying CO2 doesn't exist as a liquid stop and listen. CO2 isn't a liquid at atmospheric pressure. But inside a gas cylinder like what they use for softdrinks it is a liquid. How much pressure are we talking here? About 70PSI. But if you can get your hands on and old soda fountain you could easily make a one shot vapor cooling rig. Just make sure to keep a window open because too much CO2 in a room will make you kinda light headed.

it is on the materials watch list that customs has... if you import it, I am pretty sure you will have some serious questions raised about "wtf" you are doing. it is more than a moderator also... with some refinement it makes a splended dry thermonuclear fuel in a gas state :)

Yeah use it as a coolant. Then afterwords you can work on that old tokamak fusion reactor in the basement :evilaugh:

Whoah! This makes me want to flame you!

Damn! Got me with his words!

That's true. You're confusing me!

Really? Then why do they call it a gas cylinder, rather than a liquid cylinder?

Amazing! And I thought, at around that pressure, the gaseous carbon dioxide was merely dissolved in the liquid water.

Yay!

/snarky

Hint: Don't ever say "don't flame me" or "stop and listen" when you're discussing chemistry in a forum full of chemists.

Alchemy:D

or Chemisticians :D

I'm sorry. I've only dealt with a few ChemEs in the past and I don't give them much credit. Add in the people who think flow decreases in a series loop and I figured I had to explain things as I would to a 12 year old.