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Re: How to know if Iodine I have is REAL Iodine and NOT something else? (poison/harmful)
 
Violien Views: 2,053
Published: 6 years ago
 
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Re: How to know if Iodine I have is REAL Iodine and NOT something else? (poison/harmful)


Iodide and Iodine are different chemicals:

Potassium Iodide will not colour your flour/starch unless it's converted to Iodine first. Iodide is I- which is an Iodine atom with one electron added. It is colourless and practically tastless. The potassium tastes a little salty (like sodium, but a little different).

Iodine is I2 which is two iodine molecules together. It is purple and is a gas at room temperature.

Iodine dissolves in water very poorly. It does dissolve very well in a watery solution of potassium Iodide though. That's why a purple iodine solution always also contains iodide (either potassium or sodium, never seen the sodium kind though).

 

 
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