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What class of combustible liquids encompasses those with flash points at or above 140°F and below 200°F?

  1. Class IIA

  2. Class IIIB

  3. Class IIIA

  4. Class IV

The correct answer is: Class IIIA

The class of combustible liquids that includes those with flash points at or above 140°F and below 200°F is classified as Class IIIA. This classification is significant in understanding the handling and storage requirements of various liquids, particularly in occupational safety and hazard communication. Class IIIA liquids, with their specified flash point range, are less flammable than those in the lower classes (like Class I and Class II) but can still pose fire risks under certain conditions, such as high temperatures or when exposed to open flames or sparks. Recognizing the characteristics of Class IIIA liquids is essential for safety professionals when developing protocols, safety data sheets, and emergency response plans to minimize risks associated with fire hazards. Understanding these classifications helps in enforcing appropriate safety measures and ensuring compliance with regulations, which is a core aspect of occupational safety management.