RT Report
T1 Polybrominated Biphenyls - Environmental Health Criteria 152
A1 World Health Organization, 
K1 chemical
K1 environmental health
K1 polychlorinated biphenyl
K1 pollutant
K1 toxic substance
SN 92 4 157152 7
YR 1994
FD 1994
LK https://wedocs.unep.org/handle/20.500.11822/29467
UL https://wedocs.unep.org/handle/20.500.11822/29467
NO The term polybrominated biphenyls or polybromobiphenyls (PBBs) refers to a group of halogenated hydrocarbons, formed by substituting hydrogen by bromine in biphenyl. PBBs are not known to occur as natural products. They have a molecular formula of C12H(10-x-y)Br(x+y) where both x and y = 1 to 5. Theoretically 209 congeners are possible. Only a few have been synthesized  individually and characterized. PBBs, manufactured for commercial use, consist mainly of hexa-, octa-, nona-, and abromobiphenyls, but also contain other homologues.
DS UN Environment Document Repository
RD Sep 17, 2026