Toxic Release Inventory data for 2024. 23 facilities reported releasing 1, 3-phenylenediamine.
| Facility | State | On-site (lb) |
|---|---|---|
| Sabic Innovative Plastics Mt. Vernon Llc Mount Vernon | Indiana | 1.1k |
| Proviron Inc Friendly | West Virginia | 255 |
| Duoline Technologies Inc. Gilmer | Texas | 45 |
| Filmtec Corp Edina | Minnesota | 26 |
| Veolia Wts Solutions Usa Inc. Minnetonka | Minnesota | 21 |
| Weylchem Us Inc. Elgin | South Carolina | 8 |
| Solvay Specialty Polymers Usa Llc Greenville | South Carolina | 1 |
| Clean Harbors Deer Park Llc La Porte | Texas | 0 |
| Clean Harbors Aragonite Llc Grantsville | Utah | 0 |
| Clean Harbors El Dorado Llc El Dorado | Arkansas | 0 |
| Ross Incineration Services Inc Grafton | Ohio | 0 |
| Polycoat Products Llc Bedford | Texas | 0 |
| Covestro Llc Baytown | Texas | 0 |
| Deer Park_tx (Roh) Deer Park | Texas | 0 |
| E R Carpenter Lp Pasadena | Texas | 0 |
| Rubicon Llc Geismar | Louisiana | 0 |
| Royce Associates Lp Passaic Color Chemical Co Div Paterson | New Jersey | 0 |
| Momentive Performance Materials Inc. Texas City | Texas | 0 |
| Evonik Corp Los Angeles | California | 0 |
| Carpenter Co Elkhart Div Elkhart | Indiana | 0 |
| Carlisle Polyurethane Systems Berea | Ohio | 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, 23 facilities reported releasing 1, 3-phenylenediamine to EPA's TRI program.
The primary release pathway is air emissions (1.5k lb), which includes both stack emissions from industrial processes and fugitive emissions from equipment leaks, evaporation, and other non-point sources.
TRI data represents reported releases, not measured environmental concentrations. A facility reporting large releases of 1, 3-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.