How to condense hydrogen fluoride
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Hydrogen fluoride is produced by reacting fluorite with concentrated sulfuric acid; when collecting the liquid hydrogen fluoride, how should it be condensed?
Search on Baidu; there is information on this topic. I originally wanted to post a link, but it’s from another forum, and I’m worried it might raise suspicions, so you’ll have to look it up yourself.
Immerse the air guide tube in an ice-water mixture or saltwater at below 0 degrees Celsius
Reply 3# GE9588: Use a refrigeration unit
Reply to 1# zfy_80522: I’m not sure if it was prepared in a laboratory rather than through industrial production? Laboratory preparation: Glass instruments cannot be used; steel condensers can be employed for short periods, with the temperature of the condensing medium to be below 5 degrees Celsius. Industrialization cannot be explained in just a few words, but the principles are similar. The boiling point of hydrogen fluoride at standard pressure is 20 degrees Celsius.
Cryogenic cooling is required; generally, temperatures below -10 degrees are sufficient