nonbrominated

Nonbrominated refers to substances that do not contain bromine atoms in their molecular structure or formulation. The term is used across chemistry, materials science, and environmental discourse to distinguish bromine-free compounds from those that include brominated components. It can apply to reagents, polymers, additives, or finished products.

In flame retardancy, nonbrominated flame retardants (NBFRs) are developed as alternatives to brominated flame retardants (BFRs) due to concerns about persistence, bioaccumulation, and potential toxicity. NBFRs include inorganic hydroxides such as aluminum hydroxide and magnesium hydroxide; phosphorus-based flame retardants such as ammonium polyphosphate and melamine polyphosphate; nitrogen-based compounds; and halogen-free intumescent systems. Nonbrominated polymers may incorporate these additives to achieve flame retardancy without introducing bromine-containing components.

Beyond flame retardants, nonbrominated can describe reagents and synthesis pathways designed to avoid bromination steps. This can reduce the generation of halogenated waste, simplify handling and disposal, and align with halogen-free manufacturing goals. In consumer products, nonbrominated formulations may be pursued to meet regulatory or sustainability criteria and to minimize environmental impact.

Environmental and regulatory considerations often motivate the use of nonbrominated substances. Brominated compounds can be persistent, environmentally mobile, and toxic to non-target organisms, leading to restrictions in many regions. However, nonbrominated does not automatically guarantee safety; each compound requires evaluation for toxicity, persistence, and exposure risk within its specific context.