Which of the following statements about Halon is true?

Halon, a type of fire suppression agent used predominantly in specialized fire extinguishing systems, is known primarily for its effectiveness in smothering fires without leaving residue. However, one significant drawback of Halon is its impact on the environment, particularly concerning ozone depletion.

The correct statement regarding Halon is that it is an ozone-depleting substance. This classification is primarily based on the presence of bromine atoms in its molecular structure, which are highly effective at destroying ozone molecules in the stratosphere, the layer that protects the Earth from harmful ultraviolet radiation. Due to this environmental concern, the use of Halon has been restricted under the Montreal Protocol, an international treaty designed to phase out substances that deplete the ozone layer.

Understanding the other options provides context: Halon is not considered non-toxic to humans, as exposure can lead to health risks such as respiratory issues. It is also not biodegradable, meaning it does not break down naturally in the environment; rather, it remains intact for long durations, exacerbating its environmental impact. Lastly, Halon is not water-soluble, which means it does not dissolve in water, further complicating any cleanup or ecological impact evaluation after its release. This knowledge underscores the relevance of environmental considerations when discussing