Melting Points

1
Melting Points

• You will do MANY in organic labs.
• Learn to do them well.

2
With your spatula, grind the sample into fine
powder
3
Poke the inverted capillary into the powder,
trapping some sample in the open end.

• Repeat this step, if necessary to obtain enough
  sample to see.

4
Pack the sample by bouncing it down your
condenser several times.

• . . .or you can hold the capillary with your
  thumb and forefinger, and RAP it sharply on the
  bench top - but this could hurt!!

5
Insert the capillary into one of the 3 slots,and
select a desired setting, -- say about 5.

• View the sample through the observation window
  and watch as it melts.

6
(No Transcript)
7
(No Transcript)
8
It should melt something like THISonly MUCH,
MUCH SLOWER!!(this animation will repeat . .
.)
9

• Record BOTH temperature readings (a melting point
  RANGE)
• Where it STARTS (when you see the first liquid
  run).
• Where it ENDS (when the last bit of solid becomes
  liquid).