Which of the following is listed as a Hazard Class 3 material in the example?

Which of the following is listed as a Hazard Class 3 material in the example?

• A. Black powder and ammonium nitrate
• B. Gasoline
• C. Magnesium
• D. Ammunition

Answer: (C)

Hazard Class 3 covers flammable liquids—substances with a flash point low enough to ignite in air (typically at or below 60°C/140°F). Gasoline fits this class because it has a very low flash point, making it readily ignitable. The other items don’t: black powder and ammonium nitrate are explosives (Class 1 or related explosive categories), ammunition is also classified as an explosive, and magnesium is a flammable solid, which falls under Hazard Class 4 rather than Class 3. So gasoline is the example that meets the criteria for Hazard Class 3.

Hazard Class 3 covers flammable liquids—substances with a flash point low enough to ignite in air (typically at or below 60°C/140°F). Gasoline fits this class because it has a very low flash point, making it readily ignitable. The other items don’t: black powder and ammonium nitrate are explosives (Class 1 or related explosive categories), ammunition is also classified as an explosive, and magnesium is a flammable solid, which falls under Hazard Class 4 rather than Class 3. So gasoline is the example that meets the criteria for Hazard Class 3.