07 - Extraction of Elemental Iodine from Tincture of Iodine

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Uploaded by on Nov 12, 2009

If you need some iodine and don't want to order ANY chemicals off the Internet, here's a way to get a small amount of the interesting element! I'll be using this iodine for future experiments such as the decomposition of nitrogen triiodide and a few others. Be sure to subscribe so you'll be notified when I upload the videos! Thanks.


Also, only perform this experiment if you're willing to make some iodine stains. You will get a small amount of iodine on something you didn't want to get it on and it will stain (pretty much permanently).



I created this channel for the sole purpose to help spread the interest in science, mainly chemistry. The decline of scientific interest in the United States is rather disappointing. After I cruised YouTube a bit I noticed all the other channels similar to mine and I thought about canceling this channel; however, after thinking about the decline of science, I decided to keep making videos until I just run out of ideas.

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Uploader Comments (AmatureChemist)

  • may you do it without hydrochloric acid? I can't find this in my country and I don't know how to make it. thanks!

  • @alexandrutzz You need some sort of acid to kick the iodide anion out of the sodium iodide. With hydrochloric acid, it kicks out the iodine and replaces it with a chloride anion. If you can find a high enough grade of vinegar (acetic acid), it might work. I'm not quite confident though.

  • would a higher concentration of h2o2 increase the yield of i2?

  • @boondok19999 It may, but I doubt the cost of higher concentrated hydrogen peroxide would be worth to get another gram or two out of solution.

  • When are you going to make nitrogen triiodide??? I want to see this..!

  • @hawk1buster I made it a while back, but while I was letting it dry it detonated. Quite loud and made quite the mess. Hopefully I can get around to making it but I've been so busy with college lately.

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All Comments (97)

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  • @boondok19999 NO it dosent matter how strong it is if you have 3% H2O2 you would use more of it if you had 35% you wouldn't need to use as much

  • You know talking works better than creepy breathing... I'm just sayin...

  • Does anyone else find that the sound that was produced when he puts on the filter paper relaxing?

  • i like the ease of the approach, and seperation, gonna have to try this one some time. but seeing as how I don't have any use for it, gonna be an elemental sample with a story. thanks

  • can i increase the purity by heating this and letting it crystallize on a round bottom flask?

  • By the way, how many grams of elemental Iodine were you actually able to extract? In my recreation of this experiment, my theoretical yield and actual yield both came out to 1.2 g.

  • That's pretty cool, yo. The funny part is that I used the exact same glassware, but my chemical ratio's were different. I used Iodine Tincture:60ml, HCl:15ml, Hydrogen Peroxide:28.2ml, and Distilled Water:103.44ml. However, the final product was the same for the most part.

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