verdampfbare

Verdampfbare is a German term used to describe substances or mixtures that can pass from a liquid to a gaseous state under suitable conditions of temperature and pressure. The concept is closely tied to vaporization (Verdampfung) and is commonly applied in chemistry, safety engineering, and process technology.

In technical usage, verdampfbar distinguishes substances with non-negligible vapor pressures at practical temperatures from those that are effectively non-volatile. A related but broader concept is Verdunstung, or evaporation, which refers to the gradual loss of a liquid to the atmosphere, even if the vapor pressure is low. Thus, a substance can be verdampfbar (capable of vaporizing) and still evaporate slowly under ambient conditions, depending on its boiling point and vapor pressure.

Key properties used to characterize verdampfbare substances are the boiling point and the vapor (saturation) pressure at a given temperature. Substances with lower boiling points or higher vapor pressures are typically more verdampfbar and can contribute flammable or toxic vapors in the air, affecting safety and handling.

Examples of verdampfbare substances include water, ethanol, acetone, and many hydrocarbon solvents. In laboratory and industrial contexts, the term is often employed when discussing solvents, fuel components, and process streams, where vaporization behavior influences condensation, distillation, ventilation, and hazard assessment.

See also: volatility, vapor pressure, boiling point, safet y data sheets, flammable liquids.