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The section directly below that says it's fine in small doses but dangerous if drunk continuously. https://en.wikipedia.org/wiki/Heavy_water#Toxicity_in_humans

The section directly below that says it's fine in small doses but dangerous if drunk continuously. https://en.wikipedia.org/wiki/Heavy_water#Toxicity_in_humans https://en.wikipedia.org/wiki/Heavy_water#Toxicity_in_humans I think sinking ice cubes would be a fun party trick.

deleted 6y ago
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kaybe 6y ago
I could see the physics department doing this, if it wasn't that expensive. They used to have cocktails with dry ice in them - not sure how legal that is, but it's great fun. If you breathe in the vapour you can taste the drink quite strongly already. (Note, if you put too much dry ice the water in your drink will freeze and that can affect the taste quite negatively..)
- BrandoElFollito 6y ago
  Why would that be illegal? (besides using uni stuff to do cocktails)
  - db48x 6y ago
    Swallowing dry ice could cause injury, which means that using dry ice in a cocktail could easily be considered negligence.
    - kqr 6y ago
      To be fair, I think the bigger cause of injury in terms of dry ice cocktails is the alcohol.
- deleted 6y ago
  [deleted]
- trasz 6y ago
  Dry ice is somewhat meh - it’s so common it’s being used for cleaning. You can use it to prepare vodka cubes, though :-)
robocat 6y ago
https://www.youtube.com/watch?v=VLiirA5ooS0 https://www.youtube.com/watch?v=VLiirA5ooS0 shows that deuterium ice sinks, but the density is only a bit more than water, so it doesn’t sink “properly”. Although perhaps they didn’t get pure deuterium, since heavy water is about 11% denser than regular water. For better sinking ice, mix deuterium and oxygen-18. For the best sinking ice use super heavy water[1] (substitute tritium instead of deuterium) although it is toxic: “The median lethal dose (LD50) of tritium assimilated by the body is estimated to be 370 GBq (10 Ci). Higher doses can be tolerated with forced fluid intake to reduce the biological half life.” [1] https://en.wikipedia.org/wiki/Tritiated_water https://en.wikipedia.org/wiki/Tritiated_water
- josefx 6y ago
  > For better sinking ice, mix deuterium and oxygen-18. One of the videos linked by other comments mentioned that they spend $1000 on a tiny amount of O18 to see if it would also taste sweet. Ice cubes made from that seem to be the kind of party trick best reserved for celebrating your first billion.

deleted 6y ago

[deleted]

kaybe 6y ago

I could see the physics department doing this, if it wasn't that expensive. They used to have cocktails with dry ice in them - not sure how legal that is, but it's great fun. If you breathe in the vapour you can taste the drink quite strongly already. (Note, if you put too much dry ice the water in your drink will freeze and that can affect the taste quite negatively..)

BrandoElFollito 6y ago
Why would that be illegal? (besides using uni stuff to do cocktails)
- db48x 6y ago
  Swallowing dry ice could cause injury, which means that using dry ice in a cocktail could easily be considered negligence.
  - kqr 6y ago
    To be fair, I think the bigger cause of injury in terms of dry ice cocktails is the alcohol.
deleted 6y ago
[deleted]
trasz 6y ago
Dry ice is somewhat meh - it’s so common it’s being used for cleaning. You can use it to prepare vodka cubes, though :-)

robocat 6y ago

https://www.youtube.com/watch?v=VLiirA5ooS0 https://www.youtube.com/watch?v=VLiirA5ooS0 shows that deuterium ice sinks, but the density is only a bit more than water, so it doesn’t sink “properly”. Although perhaps they didn’t get pure deuterium, since heavy water is about 11% denser than regular water. For better sinking ice, mix deuterium and oxygen-18. For the best sinking ice use super heavy water[1] (substitute tritium instead of deuterium) although it is toxic: “The median lethal dose (LD50) of tritium assimilated by the body is estimated to be 370 GBq (10 Ci). Higher doses can be tolerated with forced fluid intake to reduce the biological half life.” [1] https://en.wikipedia.org/wiki/Tritiated_water https://en.wikipedia.org/wiki/Tritiated_water

josefx 6y ago
> For better sinking ice, mix deuterium and oxygen-18. One of the videos linked by other comments mentioned that they spend $1000 on a tiny amount of O18 to see if it would also taste sweet. Ice cubes made from that seem to be the kind of party trick best reserved for celebrating your first billion.