Which UN Hazard Class indicates a flammable or combustible liquid?

The UN Hazard Class that indicates a flammable or combustible liquid is indeed Hazard Class 3. This classification covers liquids that can easily ignite and pose fire hazards when exposed to heat, sparks, or flames. The characteristics of these substances include a flash point of not more than 60 degrees Celsius (140 degrees Fahrenheit).

Class 3 substances are crucial to recognize in emergency situations because they can rapidly amplify fire risks, impacting both the responders and the surrounding environment. Their potential for combustion necessitates specific handling, storage, and labeling measures to ensure safety.

In contrast, the other UN Hazard Classes each address different types of hazardous materials. For instance, Class 2 encompasses compressed gases, Class 4 includes flammable solids, and Class 6 pertains to toxic substances. Understanding these distinctions is essential for emergency responders to effectively manage hazards during incidents involving hazardous materials.