Fyndium - 14-2-2021 at 02:42
Can CaCl2 trap be used after/before cold trap to prevent water entering the vacuum pump?
Tsjerk - 14-2-2021 at 09:55
I don't think so, CaCl2 will lose water in low humidity air so probably in a vacuum as well. Maybe Cao would work but I don't think it would be very
efficient.
Fyndium - 14-2-2021 at 10:11
As for any question, the best answer is to try it out, and I shall when I vacuum distill stuff next time. Calcium chloride clings to the last hydrates
so tightly that unless heated, it should retain them pretty well even under high vacuum.