Thank you so much. I had a hard time visualizing the melting point technique when I read those steps in the O-Chem Lab Survival Manual. This video should be required viewing for new students since O-Chem labs cannot be done simply by reading about it.
Awesome video, the hardest part is definitely identifying the start of the melting range. You need to observe an actual drop, not just the substance moving away from the sides of the capillary.
Plz let me confirm that the glass capillary hole is open from just only 1 side or from both sides? Before jolting the capilary tube in the long glass tube.
+Enida Nushi If the sample is loose it will melt unevenly. Also he mentioned near the end that air is a thermal insulator, so you want to sample compact to get a narrow melting point.
I think because the more you have, the longer it takes to reach thermal equilibrium. (Think about if you put twice ad much food in a microwave, it takes longer)
