Laboratory 21.16: Video – Making Your Own Chemicals (Crystal Iodine)

In this video, Robert Bruce Thompson shows you how to make your own crystal iodine, a DEA-regulated chemical, in about two minutes with readily available chemicals.


Many people are allergic to iodine. You should only work with this chemical if you are sure that you are not one of these people.


This video incorporates, in modified form, material from Illustrated Guide to Home Chemistry Experiments: All Lab, No Lecture.


September 14, 2009

  • Patrick Holder

    It’s worth noting that a fair number of people are extremely allergic to iodine and that you should only work with this chemical if you are confident that you are not.

  • Gareth Branwyn

    Thanks for that, Patrick. I added a Caution to that effect.

    (I happen to be one of those people who’s allergic to iodine)

  • Bob Thompson

    Thanks, Patrick. I learn something new every day. I knew that iodine was toxic and irritating, of course, but I didn’t realize that it was also an allergen.