What is the pour point of a liquid?

The pour point of a liquid is defined as the lowest temperature at which the liquid can still flow. This property is crucial in various applications, particularly in the transportation and storage of liquids like fuels and oils. At temperatures below the pour point, a liquid may begin to thicken or solidify, making it difficult or impossible to pour or pump. Understanding the pour point is vital for maintaining the functionality of the liquid in different temperature conditions, ensuring that it can be effectively used in mechanical and industrial processes.