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Chemical reaction: two flame retardants to phase out in 2004.


On Monday, the sole U.S. manufacturer of two flame retardants pledged to cease making both products next year. The firm had initiated discussions with the Environmental Protection Agency Environmental Protection Agency (EPA), independent agency of the U.S. government, with headquarters in Washington, D.C. It was established in 1970 to reduce and control air and water pollution, noise pollution, and radiation and to ensure the safe handling and  about a potential phase-out just last month (SN: 11/1/03, p. 275). This week's announcement accelerates by 4 years the compounds' recently mandated elimination in California. The European Union European Union (EU), name given since the ratification (Nov., 1993) of the Treaty of European Union, or Maastricht Treaty, to the

European Community
 had already announced a ban on the two flame retardants, which are widely used in furniture and plastic products. That ban is slated to go into effect next year.

The chemicals--mixes of polybrominated diphenyl ethers Polybrominated diphenyl ethers or PBDE, are a flame retardant sub-family of the brominated flame retardant group. They have been used in a wide array of household products, including fabrics, furniture, and electronics.  (PBDEs)--have become ubiquitous pollutants in both the environment and people. Recent animal tests have shown that these chemicals are harmful at doses similar to those that would result in the milk, blood, and fat concentrations that had been measured in some people in North America (SN: 10/25/03, p. 266).

EPA EPA eicosapentaenoic acid.

EPA
abbr.
eicosapentaenoic acid


EPA,
n.pr See acid, eicosapentaenoic.

EPA,
n.
 "commends Great Lakes Chemical Corporation Great Lakes Chemical Corporation is a chemical research, production, sales and distribution company that produces specialty chemicals used for polymers, fire suppressants and retardants, pool and spa water purification systems and various other applications.  for taking this action voluntarily," says Stephen L. Johnson, the agency's acting deputy administrator. The move will accelerate a shift from these PBDEs to safer alternatives, he says.

The products to be phased out are known as the penta mix and octa mix because they contain predominantly PBDEs with five and eight bromine bromine (brō`mēn, –mĭn) [Gr.,=stench], volatile, liquid chemical element; symbol Br; at. no. 35; at. wt. 79.904; m.p. –7.2°C;; b.p. 58.78°C;; sp. gr. of liquid 3.12 at 20°C;; density of vapor 7.  atoms per molecule, respectively. Manufacturers add the penta mix primarily to foam in furniture and the octa mix to the plastic parts in personal computers and small appliances.

Great Lakes, based in Indianapolis, has already developed an alternative known as Firemaster 550 for use in foams. EPA's preliminary evaluation of the product concludes that the new flame retardant doesn't persist in the environment or accumulate in animals and isn't acutely toxic to aquatic organisms. The agency hasn't yet determined whether Firemaster 550 might be toxic to other animals and people.
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Article Details
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Author:Raloff, J.
Publication:Science News
Article Type:Brief Article
Geographic Code:1USA
Date:Nov 8, 2003
Words:295
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