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Chemistry Forums for Students => Organic Chemistry Forum => Organic Spectroscopy => Topic started by: eunbicho1223 on November 17, 2015, 12:58:41 AM

Title: can someone guess what is my unknown product?? (IR included)
Post by: eunbicho1223 on November 17, 2015, 12:58:41 AM

Hi. I got this unknown chemical (liquid) that I need to figure out. I need to figure out the exact name for this chemical.

I think I have figured out the functional group from its fruity smell (cherry-ish) and IR. It is "ester".
I got the rough estimate of my boiling point : 115~134 C (I'm very bad at measuring bp.. dont trust this number xP)
I got the IR spectroscopy too.

<blockquote class="twitter-tweet" lang="en"><p lang="en" dir="ltr">IR spectroscopy of some unknown ester. What will be my unknown? <a href="https://t.co/cdUH9llCCO">pic.twitter.com/cdUH9llCCO</a></p>&mdash; Eunbi Cho (@EunbiCho1) <a href="https://twitter.com/EunbiCho1/status/666494836459999232">November 17, 2015</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>


But.. out of so many esters, I cannot figure out which one is the right one.
I'm sort of guessing for "Isobutyl acetate" because of its cherry-like smell. But IR spectrum is slightly off from the japanese IR database.
Can someone figure out what it is based on these observations?

Thank you

Title: Re: can someone guess what is my unknown product?? (IR included)
Post by: TheUnassuming on November 17, 2015, 02:16:16 PM

No NMR?
If all you can have is the bp. and IR you will need a more exact bp.

Title: Re: can someone guess what is my unknown product?? (IR included)
Post by: jeffmoonchop on November 27, 2015, 05:40:18 AM

usually to ID something youd do a few different analyses like NRM, Mass spec etc. Do an NMR and itd be easy