What does a specific gravity of less than 1 indicate?

• A. Floats on water
• B. Sinks in water
• C. Is neutral in water
• D. Is corrosive in water

Answer: (A)

A specific gravity of less than 1 indicates that a substance is less dense than water, meaning it will float when placed in water. This measurement is crucial in hazardous materials response as it helps responders assess the behavior of a chemical in the environment, particularly in water bodies.

When dealing with spills or leaks, understanding whether a substance will float or sink can influence safety measures, containment strategies, and remediation efforts. Chemicals with a specific gravity greater than 1 tend to sink, which could lead to more complex interactions with the environment and greater difficulty in cleanup. By knowing that a substance with a specific gravity of less than 1 will float, responders can anticipate its movement and potential interaction with aquatic ecosystems, which is especially relevant in spill containment scenarios.