Iodine (I) Fun Facts

53 I
Superhero Identity

"The Antiseptic, a hero who purifies wounds and keeps the body's metabolism in check."

The true essence of Iodine (I) on the molecular frontier.

Appearance

Iodine is a shiny, purplish-black, crystalline solid.

Everyday Connection

Iodine is found in the antiseptic used to clean a cut or scrape.

In Pop Culture

Iodine is a key nutrient often added to salt � hence �iodized salt.�

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Did You Know?

1

It has the unusual property of subliming, which means when heated, it turns from a solid directly into a deep violet-colored gas, bypassing the liquid state.

2

Iodine is an essential nutrient for humans, required by the thyroid gland to produce hormones that regulate metabolism. A deficiency causes goiter.

3

Tincture of iodine, an iodine solution, was one of the first and most effective antiseptics for wounds.

4

The element was discovered by accident by Bernard Courtois in 1811 when he was processing seaweed ash to produce saltpeter for Napoleon's armies.

5

A common test for the presence of starch is to add an iodine solution, which turns an intense blue-black color in the presence of starch.