ABSTRACT
More than 60,000 chemicals (excluding pharmaceuticals or pesticides) enter into the many products and services that shape today's life-styles. Taken together, these chemicals comprise a huge industry-in the United States alone, sales during 1990 were over $200 billion. The sheer variety, ubiquity, and economic importance of chemicals means that effective regulation to safeguard against undesirable health or environmental side effects is quite challenging.
