Value noting that my native grocery retailer sells dry ice, and acetone is definitely obtained at residence shops as a solvent. Price noting that a mercury thermometer will freeze strong at -forty (both F or C, all identical); no want for something colder than dry ice, although the liquid I recall being beneficial to go along with that was acetone relatively than ethanol (do not recall the freezing level of ethanol. However, I am fairly certain it is above -a hundred
