Lab 6 - Chem 3AL Section 203 Sweta Ramachandran 19500958...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 3AL Sweta Ramachandran Section 203 19500958 April 22, 2008 Lab 6: Identification of an Adulterated Herb or Spice Discussion: Our group’s unknowns were compounds 25 (caraway: 2-methyl-5(1- methylethynl) 2-cyclohexene-1-one), 26 (cloves: 2-methoxy-4-(2-propenyl) phenol), 27 (coriander: 3,7-dimethyl-1,6-octadien-3-ol), and 28. We spotted TLC plate 4 with the previously prepared hexane extract of the adulterated herb or spice sample (28) along with all three of the pure H/S samples. After developing the plate and visualizing the spots, we concluded that compound 27 was mixed in with the adulterant. When visualizing the spots for compound 28, we determined that it had two components because it generated two spots. On all four of the group member’s plates (different solvents, different visualization methods), the spot with the lower R f value corresponded to the one spot that compound 27 generated. Thus, we decided that compound 27 was one component of compound 28. Next we found out that the other component of compound 28 was one of the three compounds that group 1 had (1, 2, or 3). We compared the TLC
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/23/2009 for the course CHEM Chemistry taught by Professor Nitche during the Spring '08 term at University of California, Berkeley.

Page1 / 3

Lab 6 - Chem 3AL Section 203 Sweta Ramachandran 19500958...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online