The boiling point of cinnamic acid is related to chemical properties and is quite important. According to various books, its boiling point is about 297.5 degrees Celsius. This boiling point is of key guiding value in many fields such as experimental operation and chemical production. When distilling and purifying cinnamic acid, controlling the temperature to approach this boiling point can effectively separate and obtain a pure product. And knowing the boiling point can help to predict the physical state of cinnamic acid in different environments. It is an indispensable parameter in scientific research exploration and practical application.