Exp087

media type="custom" key="3790365"

=Objective= To test the solubility of 2,4,6-Trihydroxy benzoic acid in six solvents: Methanol, Ethanol, Acetonitrile, THF, Toluene, and DMSO by NMR spectroscopy. =Results=

[|Pic-B]
=Discussion= =Conclusion=

It was observed that the compound 2,4,6-Trihydroxy benzoic acid was a monohydrate. Therefore, NMR test was impossible to perform.
=Log=

2009-05-8

 * 11:50** Labelled new one dram vials A1-F1.
 * 11:55** Filled vials with small amount of solute and pipetted 100uL of the six major solvents; namely: Methanol, Ethanol, Acetonitrile, THF, Toluene and DMSO and vortexed them for 15-20 seconds**.**
 * 12:20** Sonicated the vials A1-F1 for 30 minutes. Temp recorded- 24C.

16:10** Transfered the supernatent from vials A1-F1 into A2-F2.
 * 12:50** Removed the vials from the sonicator.
 * 13:03** Took **pic-A** after sonification.
 * 13:04** Centrifuged the vials for 2 minutes.
 * 13:06** Removed vials from centrifugation.
 * 13:10** Observed clear distinction of the solute from the solvent in each vial before taking **pic-B.

12:35** Transfered supernatents into test-tubes filled with 0.7uL Chloroform-D.
 * 2009-05-11
 * 12:50** It was observed that the compound being a monohydrate, did not dissolve in Chloroform-D; hence, NMR was not taken.