Richard Denison, Ph.D., is a Lead Senior Scientist.
No one knows how many chemicals are in use today. It’s a problem that we don’t.
The TSCA Inventory lists about 85,000 chemicals, but because it is a cumulative list that started in 1979, it lists all chemicals that have been in commerce at some point since then. It is not a list of chemicals currently on the market.
EPA periodically collects information on chemicals produced or imported above a certain volume threshold (currently set at 25,000 pounds per reporting site in the reporting year). In the most recent data collected in 2012, companies reported producing or importing 7,700 chemicals. However, given the volume threshold and the several exemptions from reporting requirements, we know this number is a significant underestimate of the number of chemicals in active commerce.
This means that all we know is that somewhere between 7,700 and 85,000 chemicals under TSCA’s jurisdiction are presently in commerce. I’ve repeatedly heard industry and environmentalists cite each of these numbers in claims they make about how many chemicals are in use today. The truth, however, clearly lies somewhere within this huge range. Read More