Why is Halon no longer manufactured?

Halon is no longer manufactured primarily because it depletes the ozone layer. The substances that were used in the production of Halon, particularly Halon-1301 and Halon-1211, contain bromine, which is significantly more effective than chlorine in ozone depletion. The scientific consensus on ozone layer depletion led to international agreements, such as the Montreal Protocol, which aimed to phase out substances that harm the ozone layer, including Halons. As a result, the production and use of Halon have been restricted, with a focus on finding safer alternatives that do not compromise atmospheric health.

The other options do not align with the primary reason for the cessation of Halon manufacturing. Although Halon can be costly, expenses are not the key factor. Furthermore, it is recognized for its effectiveness in firefighting, particularly in enclosed spaces where traditional water-based techniques may be ineffective. While Halon can pose respiratory issues, this concern does not represent the main environmental impact that led to its discontinuation.