Skip to main content
Try Wikispaces Classroom now.
Brand new from Wikispaces.
Pages and Files
list of experiments
Solubility book (3rd Edn)
To determine the solubility of
[link to CS JCB]
in water and 1-octanol at 25°C using UV/Vis Spectroscopy and the Shake Flask Method
Added solute to a vial with the solvent and allowed to shake on the shake flask apparatus at 25°C. Measured solubility using UV/Vis Spectroscopy.
Vial A (water)
: After 24 hours of shaking
of results for A_24hoursnodilution
There was no peak in the spectrum, but the spectrum just continued to rise, so no solubility could be measured.
No solubility measurement could be obtained.
18:18 Added 0.0860 g of trans-dibenzalacetone (Product 284A in
) to a 20 mL screw cap vial (Vial A). Added 10 mL of distilled water.
18:20 Added 0.1482 g of trans-dibenzalacetone (Product 284A in
) to a 20 mL screw cap vial (Vial B). Added 5 mL of fresh 1-octanol.
18:30 Both vials were sealed with parafilm and placed in the 25°C Shake Flask apparatus.
11:41 Placed fresh distilled water in both the 1 cm pathlength sample and control cuvettes and analyzed by the Lambda 2 Spectrometer.
11:51 Removed Vial A from the shake flash apparatus. A few yellow crystals floating on the top of the solution, but most of the crystals were on the bottom of the flask. The supernatant was clear with no yellow color. Filtered the supernatant through a paster pipette filter and placed in the sample cuvette. This is sample A_24hoursnodilution. Analyzed the sample by Lambda 2 Spectrometer. Analyzed the sample by the Lambda 25 Spectrometer and saved the spectrum as ONSEXP336A_24hoursnodilution.
12:22 Placed Vial A back in the shake flask apparatus at 25°C.
help on how to format text
Turn off "Getting Started"