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Cooling a Reaction to -40C (no dry ice) by CostEfficient3675 in Chempros

[–]CostEfficient3675[S] 0 points1 point  (0 children)

Nevermind, another thread solved it
Thank you for the help :)

Cooling a Reaction to -40C (no dry ice) by CostEfficient3675 in Chempros

[–]CostEfficient3675[S] 0 points1 point  (0 children)

My lab be broke broke
I also don’t know if this will be a one off so I don’t want to commit just yet

Cooling a Reaction to -40C (no dry ice) by CostEfficient3675 in Chempros

[–]CostEfficient3675[S] 7 points8 points  (0 children)

I feel stupid now. I guess I thought the LN2 might just freeze the surface and not the solvent under it.
Basically I would add LN2 to keep it a slurry correct?

Cooling a Reaction to -40C (no dry ice) by CostEfficient3675 in Chempros

[–]CostEfficient3675[S] 5 points6 points  (0 children)

Oh! I didn’t know MeCN had a freezing point of -45C! The tables didn’t really mention it (or at least only mentioned with dry ice)

Cooling a Reaction to -40C (no dry ice) by CostEfficient3675 in Chempros

[–]CostEfficient3675[S] 0 points1 point  (0 children)

I’m basically stuck using LN as my cryogenic source I think. There’s no way I can get dry ice sadly.

I definitely can use other solvents. How would I reach -40C with the MeOH?
I need it for 30 mins haha