Tetrabromobisphenol A is a highly pure flame retardant, containing stable aromatic bromine. It can be used as a reactive or additive flame retardant.
As a reactive flame retardant, it finds particular application as a reactive monomer in epoxy and polycarbonate polymers. It is very cost-effective and once reacted, it is permanent and non-migrating. Properties of note are improved polymer viscosity and UV resistance.
As an additive flame retardant, is widely used in ABS. It melt blends into these systems, resulting in excellent processability, impact strength and moderate-range UV stability.
B-543 is generally used with a synergist such as antimony oxide for maximum flame-retardant performance.