What is the definition of a flammable liquid based on its flashpoint?

A flammable liquid is defined by having a flashpoint of less than 141°F. The flashpoint is the lowest temperature at which the vapor of a liquid can ignite in air when exposed to an open flame or spark. Understanding this definition is critical in hazardous materials management, as it helps determine handling, storage, and safety measures necessary to prevent accidental ignitions.

Liquids with a flashpoint below this threshold are considered flammable and can readily form ignitable mixtures with air at normal temperatures, making them particularly hazardous in various environments. This classification helps ensure that appropriate precautions are taken during handling, transport, and storage to mitigate fire risks effectively.

In contrast, liquids with flashpoints above 141°F are classified differently and do not present the same immediate fire hazards at standard temperatures. Special storage concerns typically apply to various hazardous materials, but the specific definition of "flammable liquid" hinges on the flashpoint criterion alone. Understanding these classifications is essential for safety protocols in environments dealing with chemicals and flammable substances.