| NFNouryon Functional Chemicals, LLC | Axis | AL | Chemical Manufacturing325120 | 20-99 | ● ACTIVE |
| NPNouryon Pulp and Performance Chemicals | Columbus | MS | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
| NSNouryon Surface Chemistry LLC | Morris | IL | Chemical Manufacturing325199 | 100-499 | ● ACTIVE |
Novartis Pharmaceuticals Corporation | East Hanover | NJ | Chemical Manufacturing325411 | 500+ | ● ACTIVE |
| NANufarm Americas INC | Alsip | IL | Chemical Manufacturing325320 | 20-99 | ● ACTIVE |
| NENugen Energy LLC | Marion | SD | Chemical Manufacturing325110 | 20-99 | ● ACTIVE |
Nyco America LLC | Newnan | GA | Chemical Manufacturing325199 | 20-99 | ● ACTIVE |
| NPNyco Products CO | Countryside | IL | Chemical Manufacturing325611 | 20-99 | ● ACTIVE |
| NCNylon Corporation of America | Manchester | NH | Chemical Manufacturing325211 | 20-99 | ● ACTIVE |
| OCOccidental Chemical Corporation - Muscle Shoals Plant | Muscle Shoals | AL | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
| OCOccidental Chemical Corporation - Wichita Plant | Wichita | KS | Chemical Manufacturing325110 | 100-499 | ● ACTIVE |
| OIOcusoft INC. | Rosenberg | TX | Chemical Manufacturing325412 | 20-99 | ● ACTIVE |
| OCOlin Chlor-alkali, Charleston Plant | Charleston | TN | Chemical Manufacturing325180 | 100-499 | ● ACTIVE |
| OCOlin CORP. Mcintosh, Alabama Plant | Mc Intosh | AL | Chemical Manufacturing325180 | 100-499 | ● ACTIVE |
Omega Bio-tek, INC. | Norcross | GA | Chemical Manufacturing325180 | — | ● ACTIVE |
Omniguide, INC | Billerica | MA | Chemical Manufacturing325411 | — | ● ACTIVE |
Ony Biotech INC | Amherst | NY | Chemical Manufacturing325412 | 20-99 | ● ACTIVE |
Optima Chemical Group LLC | Douglas | GA | Chemical Manufacturing325199 | 100-499 | ● ACTIVE |
| OMOpti Medical Systems INC | Roswell | GA | Chemical Manufacturing325413 | 100-499 | ● ACTIVE |
Optimum Technologies, INC. | Cartersville | GA | Textile Mills313111 | 20-99 | ● ACTIVE |
Orasure Technologies INC | Bethlehem | PA | Chemical Manufacturing325413 | 100-499 | ● ACTIVE |
Organic Dyes and Pigments, LLC | Lincoln | RI | Chemical Manufacturing325130 | 20-99 | ● ACTIVE |
Organic Standard Solutions International LLC | North Charleston | SC | Chemical Manufacturing325199 | 20-99 | ● ACTIVE |
Organogenesis INC | Canton | MA | Chemical Manufacturing325414 | — | ● ACTIVE |
| OEOrion Engineered Carbons | Belpre | OH | Petroleum and Coal Products Manufacturing324199 | 20-99 | ● ACTIVE |
| OEOrion Engineered Carbons Borger Plant | Borger | TX | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
| OOrtec:easley | Easley | SC | Chemical Manufacturing325110 | 100-499 | ● ACTIVE |
Owen Oil Tools LP | Godley | TX | Chemical Manufacturing325920 | 100-499 | ● ACTIVE |
| OIOxarc INC Pasco | Pasco | WA | Chemical Manufacturing325120 | 20-99 | ● ACTIVE |
Oxford Performance Materials, INC. | South Windsor | CT | Chemical Manufacturing325211 | 20-99 | ● ACTIVE |
Pacific Scientific Energetic Materials CO California LLC | Chandler | AZ | Chemical Manufacturing325920 | 100-499 | ● ACTIVE |
| PIPalmer Intl INC | Skippack | PA | Chemical Manufacturing325211 | 20-99 | ● ACTIVE |
Pari Respiratory Equipment, INC. | Midlothian | VA | Chemical Manufacturing325412 | 20-99 | ● ACTIVE |
Patheon Manufacturing Services LLC | Greenville | NC | Chemical Manufacturing325412 | 500+ | ● ACTIVE |
| PPPbi Performance Products INC | Rock Hill | SC | Chemical Manufacturing325220 | 20-99 | ● ACTIVE |
| PCPecora CORP | Harleysville | PA | Chemical Manufacturing325520 | 20-99 | ● ACTIVE |
Pel-freez, LLC | Rogers | AR | Food Manufacturing311611 | — | ● ACTIVE |
Perimeter Solutions LP | Green Bay | WI | Chemical Manufacturing325180 | — | ● ACTIVE |
| PHPerrigo Holland INC | Holland | MI | Chemical Manufacturing325412 | 100-499 | ● ACTIVE |
| PIPharmaceutics International INC | Hunt Valley | MD | Chemical Manufacturing325412 | 100-499 | ● ACTIVE |
| PTPhibro Tech INC | Santa Fe Springs | CA | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
Photronics Idaho, INC. | Boise | ID | Chemical Manufacturing325992 | 100-499 | ● ACTIVE |
Photronics INC | Brookfield | CT | Chemical Manufacturing325992 | 100-499 | ● ACTIVE |
Photronics Texas Allen, INC. | Allen | TX | Chemical Manufacturing325992 | 100-499 | ● ACTIVE |
| PIPhytogenx, INC | Morgantown | PA | Chemical Manufacturing325620 | 100-499 | ● ACTIVE |
| PCPilot Chemical CO Middletown Ohio Facility | Middletown | OH | Chemical Manufacturing325611 | 20-99 | ● ACTIVE |
Piramal Critical Care INC | Bethlehem | PA | Chemical Manufacturing325411 | 100-499 | ● ACTIVE |
Piramal Pharma Solutions INC | Lexington | KY | Chemical Manufacturing325412 | 100-499 | ● ACTIVE |
Placid Refining Company LLC | Port Allen | LA | Petroleum and Coal Products Manufacturing324110 | 100-499 | ● ACTIVE |
| PIPlaskolite INC | Zanesville | OH | Chemical Manufacturing325211 | 100-499 | ● ACTIVE |