What defines a combustible chemical?

A combustible chemical is defined as having a flashpoint above 100 degrees Fahrenheit. The flashpoint is the lowest temperature at which a liquid can form enough vapor to ignite in air. Chemicals with flashpoints above this threshold do not ignite as easily as flammable materials (which have flashpoints at or below 100 degrees Fahrenheit) but can still catch fire under certain conditions.

Understanding flashpoint is critical for safety protocols in handling hazardous materials. For instance, while substances with flashpoints above 100 degrees can be controlled safely in many settings, they still require careful management to prevent accidental ignition, especially around potential ignition sources. This distinction helps in classifying the hazards of different chemicals, influencing storage, transportation, and emergency response strategies.

The other options either define characteristics of flammable materials or do not pertain specifically to the classification of combustible chemicals.