Why is it important for first responders to know about the properties of liquids identified in the ERG?

Understanding the properties of liquids identified in the Emergency Response Guidebook (ERG) is crucial for first responders, particularly when selecting firefighting equipment. The characteristics of a chemical, such as its flash point, boiling point, and potential for causing harm, inform responders about the appropriate protective gear and extinguishing agents to use during an incident. For instance, flammable liquids require specific types of fire extinguishers (like foam or dry chemicals) to effectively manage the fire hazard, while non-flammable substances may require different approaches.

Knowledge of the liquid's properties enables first responders to assess the risk of explosion, fire, or hazardous exposure, ensuring they are adequately equipped and can act decisively to protect themselves and the public. The correct equipment selection based on the properties of the substances involved is essential for effective incident management and for minimizing the potential for injury or further contamination.