P
PBDE (Polybrominated Diphenyl Ethers)
Definition
Polybrominated diphenyl ethers (PBDEs) are a group of brominated flame retardants used in plastics, printed circuit boards, and textile applications in EEE. PBDEs are restricted under RoHS Directive 2011/65/EU at a maximum concentration value of 0.1% (1000 ppm) by weight per homogeneous material. Ten individual congener groups include decabromodiphenyl ether (DecaBDE), octaBDE, and pentaBDE. DecaBDE was subject to debate but is now also restricted following alignment with Stockholm Convention obligations and REACH restrictions. PBDEs are assessed using IEC 62321-6.
Source
Directive 2011/65/EU, Annex II; IEC 62321-6:2015 (test method); Stockholm Convention on Persistent Organic Pollutants.
Practical Explanation (Compliance Context)
PBDEs may still be found in recycled plastics sourced from older EEE, representing a significant supply chain risk for manufacturers using recycled content. PCBs (printed circuit boards), high-impact polystyrene (HIPS) housings, and polyurethane foams from legacy sources may contain PBDEs. Manufacturers should explicitly address PBDE content in supplier declarations for all plastic components, particularly when sourcing recycled or reclaimed materials. IEC 62321-6 GC-MS testing is the confirmatory method.