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Sublimation of Iodine



Avoid breathing iodine vapor.  Iodine can stain skin and clothing.  Wash skin and clothing with sodium thiosulfate to remove iodine.

Chemicals and Solutions: 

Solid iodine - display bottle


One liter round bottom flask

One liter beaker

Support stand, 5" ring, and buret clamp

Bunsen burner, gauze screen and matches


Clamp the one liter beaker to the stand at a height such that a burner can be placed beneath it. 

Add a small amount of iodine to the beaker.

Clamp the round bottom flask above the beaker such that the round bottom flask seals the mouth of the beaker.

Fill the flask half full with ice water.

Heat the iodine using the Bunsen burner.  The iodine will sublime and then recrystallize on the cold round bottom flask.


To schedule a demonstration, please send an email to the demonstration lab.



Eric Camp

Lecture Demonstration Technician

Bagley Hall 171

(206) 543-1606


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