polybrominated biphenyl


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Related to polybrominated biphenyl: Polybrominated diphenyl ether

polybrominated biphenyl

or

PBB,

any of a group of organic compounds used as a fire retardant. In 1973 several thousand pounds of PBB were accidentally mixed with livestock feed that was later distributed to farms in W central Michigan. Some 1.5 million chickens, 30,000 cattle, 5,900 swine, and 1,470 sheep that became contaminated with PBB before the mistake was discovered had to be destroyed. Later studies indicated that PBB had spread through the food chain; in one test of a sample of Michigan's residents, 97% of those tested had traces of PBB in fat tissue. Affected cattle suffered loss of appetite and weight loss (often leading to death), decreased milk production, and increased miscarriages. Laboratory studies have linked PBB with liver cancer in rats and with low birth weight, liver damage, and weakened resistance to disease in human beings.
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Growth in girls exposed in utero and postnatally to polybrominated biphenyls and polychlorinated biphenyls.
In this article we present the concentrations of 4 PBDE, 1 polybrominated biphenyl (PBB), and 41 polychlorinated biphenyl (PCB) congeners, the latter for comparative purposes.
However, there are fewer congeners in the PBDE mixtures, as for polybrominated biphenyls (PBBs), than in the PCB mixtures.
The Technical Regulation restricted the use of six hazardous substances which include lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) in eight categories of EEE.
Persistent organic pollutants include chemicals used as industrial solvents or lubricants and their byproducts such as polychlorinated biphenyls (PCBs), polybrominated biphenyls (PBBs), and dioxins.
(1) RoHS Directive: An EU directive on the restriction of the use of lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr6+), polybrominated biphenyls (PBB), and polybrominated diphenylethers (PBDE) in electrical and electronic equipment.
Renue has a sustainable exterior which is UL Environment certified and complies with RoHS (Restriction of Hazardous Substances) standards to reduce exposure to hazardous materials and harmful toxins including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ether.
Annex II of the RoHS directive bans electronic equipment with maximum concentration values exceeding 0.1 percent of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls or polybrominated diphenyl ethers from entering the EU market.
The six substances are: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE).
Polychlorinated biphenyls, polybrominated diphenyl ethers, polybrominated biphenyls, phthalates, bisphenol-A and halogens such as fluoride, bromide and iodide can bind to thyroid hormone receptors and exert negative effects.
WASHINGTON -- A new House bill proposes to prohibit the manufacture after July 1, 2010 of "electroindustry products" that contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) above the maximum concentration levels specified in the European Union's RoHS Directive.