If it is a liquid, then you can't do a melting point. If you can freeze it to a solid that is still a solid at room temperature, then you can do a melting point. I myself repeatedly froze and thawed a terpenic alcohol until it thawed from a glass to a slush. I recrystallized the slush from pentane and got a solid with m.p. 44C.
You take a melting point by putting a little bit of the solid in the bottom of a capillary tube 3-inches long. You strap the capillary tube to a thermometer with a rubber band. You put the capillary-thermometer assembly into a Thiele tube (Google that) filled with mineral oil and start heating it. Record the temperature at which the solid melts.
For micro melting points and boiling points, consult Shriner, Fuson %26amp; Curtin, ';The Systematic Identification of Organic Compounds,'; or Cheronis %26amp; Entrikin, ';Semimicro Qualitative Organic Analysis.';How do i determine the boiling/melting point of a clear liquid in a lab?
Stick a thermometer in it. Then cool it until it begins to freeze, and note the temperature. Then heat it until it starts to boil, and note the temperature.How do i determine the boiling/melting point of a clear liquid in a lab?
Make the liquid go through high and low temperatures. make sure u record everything. signs of boiling is gas production (sublimination) and freezing is when the liquid turns into a solid.
make sure to have a thermometer.
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