What is ammonium nitrate commonly used as in explosives?

• A. An oxidizer that provides oxygen
• B. A fuel source
• C. A stabilizer
• D. A binding agent

Answer: (A)

Explosives rely on a rapid oxidation, which needs a source of oxygen for the fuel to burn quickly. An oxidizer provides that oxygen. Ammonium nitrate fits this role because it releases oxygen when it decomposes under heat, allowing the fuel in the mixture to burn violently and produce a lot of gas in a very short time. This oxygen supply is what makes it useful as the oxidizing component in many explosive formulations. It isn’t primarily a fuel, stabilizer, or binding agent—that’s handled by other substances in the mix.