7.27: Boiling Points (Thiele Tube)
- Page ID
- 97231
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Fill a small tube about half-full with sample and insert a capillary tube, closed end up. Attach the tube to a thermometer with a small rubber band. |
Insert the sample into a Thiele tube, so that the sample is near the middle of the oil. Heat the arm of the Thiele tube with a burner, gently and continuously. |
Heat until a vigorous stream of bubbles emerges from the capillary tube, such that individual drops can be barely distinguished. |
Remove the heat and allow the oil to cool. The boiling point is the temperature when the oil just begins to enter the capillary tube. |