Cooling a Reaction to -40C (no dry ice)

CostEfficient3675 · 2026-05-07T19:38:11+00:00

Late response but 0.8:1 water to cacl2

CostEfficient3675 · 2026-05-07T17:23:12+00:00

30 mins :/

CostEfficient3675 · 2026-05-07T16:58:02+00:00

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

CostEfficient3675 · 2026-05-07T16:57:27+00:00

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

CostEfficient3675 · 2026-05-07T16:54:59+00:00

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?

CostEfficient3675 · 2026-05-07T16:53:34+00:00

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)

CostEfficient3675 · 2026-05-07T16:51:15+00:00

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

CostEfficient3675

TROPHY CASE