Tetrabromobisphenol A (TBBPA)

Terracore Chemicals is a trusted tetrabromobisphenol A supplier serving printed circuit board manufacturers, electronics compounders, and specialty polymer producers. Tetrabromobisphenol A (TBBPA, CAS 79-94-7) is the world’s highest-volume brominated flame retardant, widely used in both reactive and additive roles. With a bromine content of approximately 58.8%, it delivers efficient flame retardancy at lower loading levels than many alternatives.

Reactive vs. Additive Use of TBBPA

In its most important application, TBBPA functions as a reactive flame retardant in epoxy-based printed circuit board (PCB) laminates. The phenolic hydroxyl groups of TBBPA react directly with epoxy resin during curing, incorporating bromine covalently into the polymer backbone. This reactive integration minimises migration and leaching concerns and provides durable flame retardancy that persists through the product lifecycle.

In its additive role, TBBPA is blended into ABS, HIPS, and polycarbonate compounds as a physical additive. Sourcing from a consistent tetrabromobisphenol A supplier with controlled particle size and high purity is essential for achieving uniform dispersion and reproducible UL94 V-0 performance in moulded electronics components.

Technical Specifications

Standard TBBPA from Terracore Chemicals: CAS 79-94-7; molecular weight 543.87 g/mol; bromine content ~58.8%; purity (TBBPA) ≥99%; melting point 178–182 °C; appearance white to off-white powder. Certificate of analysis and bromine assay report are provided with every shipment.

Regulatory & Compliance Notes

TBBPA is listed as a Substance of Very High Concern (SVHC) on the REACH Candidate List by ECHA. Its use is not prohibited under RoHS or REACH Annex XIV, but importers and downstream users in the EU must comply with SVHC communication and notification obligations. We recommend consulting your regulatory affairs team before specifying TBBPA in new product designs for the European market.

Sourcing & Supply

As a direct tetrabromobisphenol A supplier, Terracore Chemicals packages TBBPA in 25 kg lined multi-wall bags and 500 kg super-sacks. Full documentation — including SDS, TDS, certificate of analysis, and bromine assay report — accompanies every shipment. Contact our sales team to discuss grade selection, lead times, and minimum order quantities.

Storage and Handling

TBBPA should be stored in a cool, dry, well-ventilated facility in tightly sealed packaging, away from strong oxidising agents. Standard dust control measures apply: local exhaust ventilation, P3 respiratory protection, and skin and eye protection are recommended during handling. Consult the SDS for the full occupational exposure limit profile applicable in your jurisdiction.