Toxic Release Inventory data for 2024. 9 facilities reported releasing p-phenylenediamine.
| Facility | State | On-site (lb) |
|---|---|---|
| Sabic Innovative Plastics Mt. Vernon Llc Mount Vernon | Indiana | 27.2k |
| Dupont Pontchartrain Works La Place | Louisiana | 2.2k |
| Dupont Circleville Plant Circleville | Ohio | 9 |
| Tradebe Treatment & Recycling Llc East Chicago | Indiana | 7 |
| Clean Harbors El Dorado Llc El Dorado | Arkansas | 0 |
| Clean Harbors Deer Park Llc La Porte | Texas | 0 |
| Josh Lowenstein & Sons Inc Brooklyn | New York | 0 |
| Revlon Consumer Products Corp Oxford | North Carolina | 0 |
| Dupont Specialty Products Usa Llc - Spruance Plant North Chesterfield | Virginia | 0 |
The Toxic Release Inventory (TRI) tracks how much of each listed chemical U.S. industrial facilities release into the environment each year. EPA requires facilities in certain industry sectors that manufacture, process, or otherwise use TRI-listed chemicals above threshold amounts to report annually. In 2024, 9 facilities reported releasing p-phenylenediamine to EPA's TRI program.
Releases are spread across all three environmental pathways: 29.2k lb to air (stack and fugitive emissions), 62 lb to water (surface water discharges), and 63 lb to land (landfills, surface impoundments, and land treatment).
TRI data represents reported releases, not measured environmental concentrations. A facility reporting large releases of p-phenylenediamine is not necessarily causing harm at those levels — toxicity, exposure pathways, and local conditions all matter. Conversely, small reported amounts of highly toxic chemicals can pose greater risk than large amounts of less toxic ones. TRI is a transparency tool, not a risk assessment.
For health information about specific chemicals, the Agency for Toxic Substances and Disease Registry (ATSDR) publishes toxicological profiles, and EPA's Integrated Risk Information System (IRIS) provides reference doses and cancer classifications.