This video will tell you why you might want to heat a chemical reaction to reflux and how to do this safely and sustainably.
Boiling a solution for an extended period of time is sometimes necessary in organic chemistry. Refluxing is a technique that chemists use to heat solvents without boiling away significant quantities of solvent.
Heating a chemical reaction to its boiling point without a condenser to trap the vapour should be avoided. Here’s a demo of a quick and easy refluxing setup using a round bottom flask in a Heat-On Block on a magnetic stirring hotplate. Our Findenser, which is a waterless air condenser, is used to achieve effective condensing of the refluxing solvent, comparable with water condensers such as a Liebig condenser.
Condense without flowing water using the Findenser waterless air condenser, replacing the need for liebig, allihn and other glass condensers. Tests carried out on solvents with boiling points from 40°C to 90°C show that Findenser is comparable with a glass water condenser. The Findenser air condenser, when combined with a magnetic stirrer, also allows chemists to carry out reflux reactions overnight without the risk of leaks or worse still, flooding your lab.