What type of hazard is associated with pyrophoric chemicals?

Pyrophoric chemicals are classified as physical hazards because they have the ability to ignite spontaneously in air at or below room temperature. This characteristic poses a significant risk during handling, storage, and transportation, making the physical nature of these chemicals critical for safety protocols.

Understanding that pyrophoric substances can catch fire without an external ignition source highlights the necessity for appropriate safety measures such as proper containment and environmental controls. While pyrophoric chemicals can have health and environmental implications, particularly if a fire or explosion occurs, their primary classification as a physical hazard is due to their inherent risk of spontaneous combustion. The focus on this aspect is vital for effectively implementing safety training and emergency response procedures, ensuring that workers are aware of the unique challenges posed by these materials.