This is the post for the class to combine it's data collected in the first lab. I want everyone to log into the comments section of this post and leave any data that you have on the compounds.
for example;
Compound E: m.p. 123.5 - 125.0 oC
Compound E: TLC (CH2Cl2) Rf = 0.123
Compound E: TLC (acetone) Rf = 0.789
5 comments:
I observed with Compoud A:
it was a white powered solid, no recognizable smell.
my m.p on the slow run was 128-129.8
did not fo a tlc
Compound B
was a brownish/orange solid and it dried yellow on the silica paper when in sol with ch2cl2
no data for B
No observations for compoud C
Compoud d was a clear liquid that smelled like citrus
it dried clear on the silica paper
my first tlc with ch2cl2 had a dark cloud near the top
rf was 0.76
Comp B: Observations; copper/orange coloured powder that dissolved on contact with dichloromethane.
mp(slowrun) 153.0-157.5oC
Comp C: Observations; white,odorless, powder. dissolved immediately in the dichloromethane.
Rf (acetone) 0.422
Rf (dichloro) 0
PB :)
Via email Mr. Budd reports:
Compound B:
Description:
- Has a powdery texture; looks kind of like cinnamon I thought. Has a copper/cinnamon color and has no noticeable smell.
- When 2ml of Dichloromethane was added, it turned to a dark yellow color
- When a drop is put on the TLC it leaves a faint yellow dot that can be seen without the UV light.
Rf value: Run 1: 0.484
Run 2: 0.518
Compound C:
Description: A white powder that seemed to have a slight smell, but the smell was not good or bad.
MP: A range of 203 - 212 degrees C
Compound D:
Description: A clear liquid with a kind of bad smell
Rf: 0.711
Compound C
Observations:
Fine white powder compound
M.P slow run 201.3 - 235.2
M.P fast run 170.3 - 205.1
TLC compound A (ace) Rf .627
TLC compound A (dichloro) Rf 0
TLC compound D (dichloro) Rf .763
Mundle and my Rf for compound match up !!!
Compound A - white powder/ unidentifiable odour
MP
slow run : 114.5 - 129.5
fast run: 128.5-131.9
Compound B - brown/redish powder, looks like paprika
TLC(acetone) 0.53
Compound C - white powder
TLC( acetone) - dot did not move, did not have enough time to try in other solvant.
Compound D - clear liquid
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