September 21, 2024, 07:14:47 PM
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why would old asprin tablets smell like ethanoic acid, especially if they have been exposed to air?

something to do with oxidation maybe
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somehow ethanoic acid is formed when asprin reacts with air?
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Topic: synthesis of aprin lab  (Read 3595 times)

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Offline tamaradina

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synthesis of aprin lab
« on: April 25, 2008, 10:40:23 PM »
why would old asprin tablets smell like ethanoic acid, especially if they have been exposed to air?
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Offline Arkcon

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Re: synthesis of aprin lab
« Reply #1 on: April 25, 2008, 10:46:16 PM »
What's aspirin? Does it have another name? What's ethanoic acid?  Does it have another name?  What does it smell like?  Can you use the names to pull together an answer?
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline tamaradina

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Re: synthesis of aprin lab
« Reply #2 on: April 25, 2008, 10:57:15 PM »
aspirin is acetylsalicylic acid, ethanoic acid is acetic acid which i think smells like vinager...
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Offline Astrokel

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Re: synthesis of aprin lab
« Reply #3 on: April 25, 2008, 11:41:06 PM »
"somehow ethanoic acid is formed when asprin reacts with air"

My guess would be the water vapour in the air hydrolysed the -CH3COO- group to form ethanoic acid.
« Last Edit: April 26, 2008, 10:50:13 AM by Astrokel »
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Offline Yggdrasil

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Re: synthesis of aprin lab
« Reply #4 on: April 26, 2008, 12:18:26 PM »
Correct.  The other product is salicylic acid.
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