What class of flammable liquids is defined by having flash points below 73 degrees F and boiling points below 100 degrees F?

The correct classification for flammable liquids based on their flash points and boiling points is Class 1A. This class is specifically defined to include liquids that have flash points below 73 degrees Fahrenheit (22.8 degrees Celsius) and boiling points below 100 degrees Fahrenheit (37.8 degrees Celsius). Such characteristics make these liquids highly flammable and pose significant risks in fire and safety management.

Class 1B liquids also have flash points below 73 degrees Fahrenheit, but they have boiling points that can be above 100 degrees Fahrenheit. This distinction is crucial in safety protocols and regulations, as it determines how these substances should be handled, stored, and transported.

Classes 2 and 3 refer to liquids with higher flash points. Class 2 contains liquids with flash points at or above 73 degrees F but below 140 degrees F, while Class 3 includes those with flash points at or above 140 degrees F but below 200 degrees F. Therefore, knowing the specific properties that define Class 1A is essential for understanding the risks and regulatory compliance for handling highly flammable materials.