Abstract
Nine chemicals, including the widely used chemicals perfluorooctane sulfonate (PFOS) and brominated flame retardants, have been added to the Stockholm Convention on Persistent Organic Pollutants, an international treaty to which the U.S. is not party. The chemicals are targeted for worldwide elimination or restriction of production and use because they are carcinogens, interfere with reproduction or development, or damage the immune or nervous system, according to a United Nations statement. PFOS, a substance that imparts stainand stick-resistance, is listed for restriction. However, treaty partners added a number of exemptions, including the use of PFOS and its related chemicals in textile finishes, fire-fighting foam, and the manufacture of semiconductors. Other treaty listings essentially call for the phaseout of chemicals. Among those to be eliminated are commercialgrade pentabromodiphenyl ether and octabromodiphenyl ether, which are mixtures of closely related brominated compounds. Uses of these comp...
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