| CCColumbia Cement Company | Freeport | NY | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| CPComposite Product Division Freeport | Freeport | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| CFCorteva Freeport Operations | Freeport | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| FTFuzion Tech/freeport Brick Div | Freeport | PA | Chemical Manufacturing325194 | — | ◇ UNVERIFIED |
| PCProline Chemical and Plastics LLC | Freeport | FL | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SSSf Sulfur | Freeport | TX | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| QLQuality Lineals Usa, INC. | Freeport | NY | Chemical Manufacturing325211 | 20-99 | ◇ UNVERIFIED |
| BBBlackhawk Biodiesel | Freeport | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| COCoastal Oyster Creek Ammonia Chemical Plant | Freeport | TX | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| HEHuntsman Ethyleneamines LTD. | Freeport | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| NPNutritional Products | Freeport | TX | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| OCOyster Creek | Freeport | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| PRPetrochemical Refining | Freeport | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PIPiling, INC. | Freeport | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| RPReo Processing Texas | Freeport | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SFShintech Freeport Plant | Freeport | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SCShipley CO L L C | Freeport | NY | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
