Maleic anhydride
CAS # 108-31-6
4,990,482 lbs total reported releases across all facilities and years.
Facilities listed below reported releases of this chemical to the EPA Toxic Release Inventory (TRI). Quantities are self-reported annual totals in pounds, broken out by release pathway. Click any facility name for its full compliance profile.
National Release Trend (2015–2024)
+92% overall
| Year | Total Released (lbs) | Reporting Facilities | vs Prior Year |
|---|---|---|---|
| 2015 | 350,604 | 167 | — |
| 2016 | 385,648 | 169 | +10% |
| 2017 | 437,908 | 168 | +14% |
| 2018 | 509,608 | 171 | +16% |
| 2019 | 185,619 | 87 | -64% |
| 2020 | 399,246 | 166 | +115% |
| 2021 | 576,031 | 167 | +44% |
| 2022 | 1,098,806 | 165 | +91% |
| 2023 | 373,348 | 158 | -66% |
| 2024 | 673,664 | 162 | +80% |
Top Releasing Industries
| Industry Sector | Total Released (lbs) | Facilities |
|---|---|---|
| Real Estate and Rental and Leasing | 0 | 1 |
| Wholesale Trade | 0 | 11 |
| Administrative and Support and Waste Management | 2,791,948 | 14 |
| Manufacturing | 2,198,534 | 201 |
| Facility | Location | Year | Total (lbs) | Air | Water |
|---|---|---|---|---|---|
| STEPAN CO | ELWOOD, IL | 2024 | 22,263 | 22,263 | — |
| EXXONMOBIL BATON ROUGE CHEMICAL PLANT | BATON ROUGE, LA | 2024 | 21,099 | 21,099 | — |
| ASCEND PERFORMANCE MATERIALS - PENSACOLA PLANT | CANTONMENT, FL | 2024 | 10,252 | 10,252 | — |
| WESTLAKE LONGVIEW | LONGVIEW, TX | 2024 | 5,085 | 5,085 | — |
| ADVANCE COATINGS COMPANY | WESTMINSTER, MA | 2024 | 3,226 | 3,226 | — |
| BERCEN CHEMICALS LLC | DENHAM SPRINGS, LA | 2024 | 2,474 | 2,474 | — |
| LAWTER INC | BAXLEY, GA | 2024 | 2,198 | 2,198 | — |
| RUBICON LLC - GEISMAR FACILITY | GEISMAR, LA | 2024 | 1,938 | 1,938 | — |
| WESTVACO CORP POLYCHEMICALS DEPT | NORTH CHARLESTON, SC | 2024 | 1,664 | 1,664 | — |
| SOUTH COAST TERMINALS STRANG ROAD FACILITY | LA PORTE, TX | 2024 | 1,569 | 1,569 | — |
| CHEMICAL RESEARCH & TECHNOLOGY | VALDOSTA, GA | 2024 | 1,553 | 1,553 | — |
| NELSON BROTHERS L L C | PARRISH, AL | 2024 | 1,506 | 1,506 | — |
| CAPITAL RESIN CORP | COLUMBUS, OH | 2024 | 1,452 | 1,452 | — |
| AFTON CHEMICAL CORPORATION | SAUGET, IL | 2024 | 1,400 | 1,400 | — |
| BAKER PETROLITE CORP | SAND SPRINGS, OK | 2024 | 1,280 | 1,280 | — |
| DIXIE CHEMICAL COMPANY | PASADENA, TX | 2024 | 1,147 | 1,147 | — |
| POLYNT COMPOSITES USA INC. | CHATHAM, VA | 2024 | 1,109 | 1,109 | — |
| ROHM AND HAAS CHEMICALS LLC | KNOXVILLE, TN | 2024 | 1,064 | 1,064 | — |
| ASHLAND CHEMICAL | PHILADELPHIA, PA | 2024 | 946 | 946 | — |
| AOC TRUSTED SOLUTIONS | VALPARAISO, IN | 2024 | 841 | 841 | — |
| FLINT HILLS RESOURCES JOLIET, LLC | CHANNAHON, IL | 2024 | 788 | 788 | — |
| ISP CHEMICALS LLC | CALVERT CITY, KY | 2024 | 780 | 780 | — |
| INEOS COMPOSITES US, LLC | PITTSBURGH, PA | 2024 | 764 | 764 | — |
| THE LUBRIZOL CORPORATION, DEER PARK PLANT | DEER PARK, TX | 2024 | 701 | 701 | — |
| INTERPLASTIC CORP - MINNEAPOLIS PLANT | MINNEAPOLIS, MN | 2024 | 683 | 683 | — |
| MOBILE ROSIN OIL CO INC | MOBILE, AL | 2024 | 600 | 600 | — |
| NIPPON SHOKUBAI AMERICA INDUSTRIES, INC. | CHATTANOOGA, TN | 2024 | 544 | 500 | — |
| MILLIKEN CHEMICAL - DEWEY PLANT | INMAN, SC | 2024 | 528 | 528 | — |
| ASHLAND NEAL PLANT | KENOVA, WV | 2024 | 513 | 513 | — |
| PIONEER PLASTICS CORP | AUBURN, ME | 2024 | 510 | 510 | — |
| PLASMINE TECHNOLOGY INC | BAY MINETTE, AL | 2024 | 505 | 500 | 5 |
| WESTLAKE PETROCHEMICAL LP | SULPHUR, LA | 2024 | 503 | 503 | — |
| POLYNT COMPOSITES USA, INC. - FOREST PARK | FOREST PARK, GA | 2024 | 473 | 473 | — |
| ARIZONA CHEMICAL CO. | SAVANNAH, GA | 2024 | 469 | 469 | — |
| OAK POINT PLANT | BELLE CHASSE, LA | 2024 | 468 | 193 | 275 |
| AOC L L C TENNESSEE PLANT | COLLIERVILLE, TN | 2024 | 457 | 457 | — |
| REICHHOLD CHEMICALS INC | MORRIS, IL | 2024 | 435 | 435 | — |
| PASADENA | PASADENA, TX | 2024 | 405 | 405 | — |
| INEOS COMPOSITES US, LLC | JACKSONVILLE, AR | 2024 | 405 | 405 | — |
| INTERPLASTIC CORPORATION | FORT WRIGHT, KY | 2024 | 354 | 354 | — |
| BAYER MATERIALSCIENCE BAYTOWN | BAYTOWN, TX | 2024 | 340 | 340 | — |
| VERTELLUS DWG LLC | DELAWARE WATER GAP, PA | 2024 | 324 | 184 | — |
| MFG CHEMICAL, INC. - CALLAHAN PLANT | DALTON, GA | 2024 | 277 | 277 | — |
| INTERPLASTIC CORPORATION | HAWTHORNE, CA | 2024 | 258 | 258 | — |
| BAKER PETROLITE CORPORATION - BARNSDALL, OK | BARNSDALL, OK | 2024 | 255 | 255 | — |
| COLONIAL CHEMICAL INC. | SOUTH PITTSBURG, TN | 2024 | 239 | 91 | — |
| REICHHOLD LLC 2 | AZUSA, CA | 2024 | 204 | 204 | — |
| REICHHOLD LLC 2 | PENSACOLA, FL | 2024 | 200 | 200 | — |
| INEOS ABS (USA) LLC - ADDYSTON PLANT | ADDYSTON, OH | 2024 | 185 | 180 | 5 |
| INFINEUM USA L.P. - BAYWAY CHEMICAL PLANT | LINDEN, NJ | 2024 | 185 | 185 | — |