Paraffin oil is a mixture extracted from petroleum and has a series of physical properties, the most important of which is boiling point. The boiling point of paraffin oil refers to the temperature at which paraffin oil begins to vaporize at standard atmospheric pressure, which is one of the important indexes for paraffin oil use. In this paper, we will understand the physical properties of paraffin oil, especially its boiling point.

Physical properties of paraffin oil

Paraffin oil is a colorless and transparent liquid with a certain viscosity. Its density is usually between 0.8 and 0.9g/cm3, which is lighter than water. Paraffin oil has a high ignition point, usually between 180-220℃. Its flash point is also very high, usually between 50 and 70℃. These physical properties make paraffin oil widely used in many industries and consumer goods.

Boiling point of paraffin oil

The boiling point of paraffin oil refers to the temperature at which paraffin oil begins to vaporize at standard atmospheric pressure. Paraffin oil is a complex mixture containing many different components, so the boiling point of paraffin oil is very wide, usually between 150-350℃. The higher the boiling point of paraffin oil, the heavier the composition, while the lower the boiling point, the lighter the composition.

How to measure the boiling point of paraffin oil

Measuring the boiling point of paraffin oil is an important operation, which can help us understand the physical properties of paraffin oil and its applicability in different applications. The following steps are used to measure the boiling point of paraffin oil:

1. Prepare laboratory equipment. It is necessary to prepare a flask containing paraffin oil, a constant temperature water bath, a thermometer, a cooler and a collection bottle.

2. Pour paraffin oil into the flask. The paraffin oil in the flask should be filled to about two thirds of the flask.

3. Put the flask in a constant temperature water bath. The water bath temperature should be slightly higher than the boiling point of paraffin oil.

4. Measure the temperature of paraffin oil with a thermometer. The temperature should remain stable before the paraffin oil starts to evaporate.

5. When paraffin oil begins to evaporate, record the temperature at this time. This temperature is the boiling point of paraffin oil.

6. After the paraffin oil begins to evaporate, connect a cooler to the flask to collect the evaporated paraffin oil.

7. Put the collecting bottle under the cooler to collect paraffin oil vapor.