Decabromodiphenyl ether
chemical compound
Decabromodiphenyl ether (also referred to as decaBDE, DBDE, BDE-209) is a brominated flame retardant which belongs to the group of polybrominated diphenyl ethers (PBDEs). It was commercialised in the 1970s and was initially thought to be safe, but is now recognised as a hazardous and persistent pollutant. It was added to Annex A of the Stockholm Convention on Persistent Organic Pollutants in 2017, which means that treaty members must take measures to eliminate its production and use. The plastics industry started switching to decabromodiphenyl ethane as an alternative in the 1990s, but this is now also coming under regulatory pressure due to concerns over human health.
Composition, uses, and production
Commercial decaBDE is a technical mixture of various PBDE congeners (related compounds). Congener number 209 (decabromodiphenyl ether) and nonabromodiphenyl ether are the main components. The term decaBDE alone refers to only decabromodiphenyl ether, the single "fully brominated" PBDE.
DecaBDE is a flame retardant. The chemical "is always used in conjunction with antimony trioxide" in polymers, mainly in "high impact polystyrene (HIPS) which is used in the television industry for cabinet backs." DecaBDE is also used for "polypropylene drapery and upholstery fabric" by means of backcoating and "may also be used in some synthetic carpets."
The annual demand worldwide was estimated as 56,100 tonnes in 2001, of which the Americas accounted for 24,500 tonnes, Asia 23,000 tonnes, and Europe 7,600 tonnes. In 2012 between 2500 and 5000 metric tonnes of Deca-BDE was sold in Europe. As of 2007, Albemarle in the U.S., Chemtura in the U.S., ICL-IP in Israel, and Tosoh Corporation in Japan are the main manufacturers of DecaBDE.
Despite its listing in Annex A to the Stockholm Convention, decaBDE is still produced in China, namely in the provinces Shandong and Jiangsu.
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