The IR spectrum looked a lot like the IR Spectrum for Crude Eugenol The first

The ir spectrum looked a lot like the ir spectrum for

This preview shows page 2 - 3 out of 3 pages.

order to check the purity of the Eugenol recovered. The IR spectrum looked a lot like the IR Spectrum for Crude Eugenol. The first two peaks were significantly high in %T than it would have been in the IR of a Pure Eugenol. Furthermore, the spectrum around 2000 wavelength also looked more like that of Crude Eugenol than Pure Eugenol. Many errors could have occurred in this experiment. Firstly, if all the distillate is not collected, or some falls down when transferring it, the yields could be low. In addition, if the organic layer was not extracted properly, and some essential oil was left behind, it could also lower the yield. Lastly, if the solution was boiled for too long, the essential oil could also evaporate along with CH 2 Cl 2 , once again decreasing the yield. In our case, we dropped a lot of our distillate while transferring it to the centrifuge tube, and we also let our solution boil for an extended period of time, thus contributing to our low yield. Conclusion: Steam distillation is used to separate immiscible liquids that have a boiling point that is too high to be separated by simple or fractional distillation. Eugenol is also such a compound
Image of page 2

Subscribe to view the full document.

was separated from cloves using steam distillation. Steam distillation is required to isolate Eugenol because of its high boiling temperature ( 250 °C). By using steam distillation, the Eugenol was separated at 130 °C, thus preventing decomposing. The distillate was collected and mixed with CH 2 Cl 2 , in order to extract the eugenol into the organic layer. The organic layer was extracted three times, and then dried with sodium sulfate to isolate eugenol. Starting from 1.07g of clove, around 0.024g of Eugenol was separated, with a recovery rate of 2.24%.
Image of page 3
  • Fall '13
  • JeramyBaum

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes