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Purifying OTC Chemicals: Simple Distillation

By March 9, 2017Uncategorized

 This is the first in a planned series of videos on techniques for purifying OTC (over-the-counter) reagents. This first one is simple distillation, used to purify and …

 This is the first in a planned series of videos on techniques for purifying OTC (over-the-counter) reagents.

This first one is simple distillation, used to purify and separate mixtures of liquids. If you have a mixture of liquids where the components have sufficiently different boiling points, simple distillation can be used to separate them. The component with the lower boiling point will vaporize first. As long as you keep track of the temperature of the vapor, you can stop the distillation once it rises above the boiling point of the component you want. That way, you end with a fairly pure product.

NOTE: It’s generally not a good idea to heat a closed system, like I did here. The vapor building up in the glassware causes a pressure increase that can rupture seals, or worse crack your glass. It’s usually a good idea to have an outlet to the atmosphere near the receiver, since all vapor should have been condensed by that point anyway. I honestly just forgot it this time around. See my videos on DCM distillation to see one in use.

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