How does specific gravity help in identifying hazardous materials?

• A. By determining the flammability of a liquid
• B. By indicating whether a liquid will float or sink in water
• C. By assessing the toxicity of a gas
• D. By measuring the pressure exerted by gases

Answer: (B)

Specific gravity is a vital property used to identify hazardous materials, particularly liquids. It is defined as the ratio of the density of a substance to the density of water. Because water has a specific gravity of 1.0, when a material has a specific gravity less than 1, it will float on water, whereas a material with a specific gravity greater than 1 will sink. This characteristic aids in the management of spills, containment strategies, and understanding how a hazardous material will behave in an aquatic environment. Recognizing whether a substance will float or sink can influence the response strategies employed during a hazardous material incident. Knowing a substance's specific gravity therefore provides responders with critical insights into safe handling and cleanup procedures.