Лако-красочные материалы — производство

The temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure is known as its boiling point. This is a characteristic property of pure solvents and is often used in specifications for solvents. When a solvent consists of a mixture of components, such as most hydrocarbon solvents, boiling occurs over a range of temperatures known as the boiling range or distilla­tion range, which is also listed in solvent specifications. Distillation range also gives an indication of solvent purity; the purer the com­pound, the narrower the distillation range. With reference to their boiling properties, solvents are divided into low boilers (boiling range <100 °C), middle boilers (boiling range 100 to 150 °C) and high boilers (boiling range >150 °C).