| QUQEMETICA US Silica - Barberton | Barberton | OH | Chemical Manufacturing325180 | 1-19 | ◐ LIKELY ACTIVE |
| QCQnity Cleveland Laird Plant | Cleveland | OH | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
Ques Industries INC | Brook Park | OH | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| QDQuidelOrtho Diagnostic Hybrids | Athens | OH | Chemical Manufacturing325413 | 100-499 | ◐ LIKELY ACTIVE |
| RDRed Diamond Plant | Mc Arthur | OH | Chemical Manufacturing325920 | 100-499 | ◐ LIKELY ACTIVE |
| RLRegeneir LLC | Powell | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| ROResearch Organics LLC | Cleveland | OH | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| RPReturn Polymers | Ashland | OH | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| RARevlis - Akron | Akron | OH | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| RMRoof Maxx Technologies | Westerville | OH | Chemical Manufacturing325320 | 20-99 | ◐ LIKELY ACTIVE |
| RCRTP Company - Gahanna | Gahanna | OH | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| RIRubex Inc | Grove City | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| SFSandusky Facility | Sandusky | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| SSSavare Specialty Adhesives LLC | Delaware | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| SDSchaaf Drugs, LLC | Lima | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| SScp | Cuyahoga Falls | OH | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| SCSilox CORP | North Ridgeville | OH | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| SESocial Eyez LLC | Cleveland Heights | OH | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| SOSOFIE - Oakwood Village | Oakwood Village | OH | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| SCState Chemical | Mayfield Heights | OH | Chemical Manufacturing325611 | 20-99 | ◐ LIKELY ACTIVE |
| SCState Cleaning | Cleveland | OH | Chemical Manufacturing325612 | 100-499 | ◐ LIKELY ACTIVE |
| SIState Industrial Product Hebron | Hebron | OH | Chemical Manufacturing325611 | 100-499 | ◐ LIKELY ACTIVE |
| SCStruktol Company of America (1) | Stow | OH | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
Sun Chemical - Centron Place | Cincinnati | OH | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
Sun Chemical Chickering Plant | Cincinnati | OH | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
Sun Chemical Franklin Mfg | Franklin | OH | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
Sun Chemical Ink Plant | Maumee | OH | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
Sun Chemical Spring Grove Site Campus 2026 | Cincinnati | OH | Chemical Manufacturing325130 | 100-499 | ◐ LIKELY ACTIVE |
| SSSyensqo Specialty Polymers USA, L.L.C. | Marietta | OH | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| SISynthomer Inc - Mogadore Main Plant | Mogadore | OH | Chemical Manufacturing325212 | 20-99 | ◐ LIKELY ACTIVE |
| TAThe Andersons Renewables, LLC - Greenville Facility | Greenville | OH | Chemical Manufacturing325193 | 20-99 | ◐ LIKELY ACTIVE |
| TAThe Armor Metal Group Acquisitions Inc | Lebanon | OH | Chemical Manufacturing325510 | 1-19 | ◐ LIKELY ACTIVE |
| TPThe Procter & Gamble Distributing LLC | Cincinnati | OH | Chemical Manufacturing325611 | — | ◐ LIKELY ACTIVE |
| TThermotec | Lorain | OH | Chemical Manufacturing325510 | 1-19 | ◐ LIKELY ACTIVE |
| TEThermotec - EP | East Palestine | OH | Chemical Manufacturing325510 | 1-19 | ◐ LIKELY ACTIVE |
| TRThe Ruscoe Company- Miller | Akron | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| TSThe Scotts Company - Marysville | Marysville | OH | Chemical Manufacturing325320 | 100-499 | ◐ LIKELY ACTIVE |
| TSThe Scotts Company - Shreve | Shreve | OH | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| TSThe Sherwin-williams Company | Columbus | OH | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| TAToagosei America, Inc. | West Jefferson | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| TBTosoh Bioscience Inc. Grove City Ohio | Grove City | OH | Chemical Manufacturing325199 | 1-19 | ◐ LIKELY ACTIVE |
| T3Tower 3 | Akron | OH | Chemical Manufacturing325199 | 1-19 | ◐ LIKELY ACTIVE |
| TATremco AG | Cleveland | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| USUpper Sandusky | Upper Sandusky | OH | Chemical Manufacturing325311 | 20-99 | ◐ LIKELY ACTIVE |
| UOUSA OH Cincinnati Plant | Cincinnati | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| UOUSA OH Columbus Plant | Columbus | OH | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| UOUSA OH Grove City Plant | Grove City | OH | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| UOUSA OH Massillon Plant | Massillon | OH | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| VSValtris Specialty Chemicals | Walton Hills | OH | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| VSValtrs Specialty Chemicals | Cleveland | OH | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |