Melting point and melting range are not the same.
Melting point is the temperature at which a substance changes from solid to liquid at atmospheric pressure. On the other hand, melting range is the temperature range over which a substance goes from a solid to a liquid state. It is the difference between the lowest and highest temperatures at which a substance melts.
Let's consider the example of naphthalene. The melting point of naphthalene (CAS 91-20-3, suppliers) is 80.2 °C, which means that it changes from a solid to a liquid state at that specific temperature. However, the melting range of naphthalene is 78-82 °C, which means that it starts to melt at 78 °C and is completely melted by 82 °C. This shows that the melting point and melting range of a substance can be different.
To find the melting point from a melting range, typically you would take the midpoint of the range. For example, if a substance has a melting range of 100-110 degrees Celsius, the melting point would be estimated at 105 degrees Celsius, which is the midpoint of the range. However, it is important to note that this is only an estimate and the actual melting point may vary depending on factors such as heating rate and sample size.
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