Freeze-drying propanol solutions

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swannnyy's picture
Freeze-drying propanol solutions

A quick question for the freeze-drying experts.
I am interested in purifying a couple of proteins. The protocol calls for extraction in 7% propanol, which is then removed by freeze-drying. The paper I sourced the protocol from used a -80C trap. Given that propanol is volatile and makes explosive vapour:air mixtures, can I safely freeze-dry using my system with a -40C trap?