| NFNouryon Functional Chemicals Burt Plant | Burt | NY | — | ◇ UNVERIFIED |
| NPNouryon Pulp and Performance Chemicals LLC | Augusta | GA | — | ◇ UNVERIFIED |
| NPNouryon Pulp & Performance Chemicals | Duluth | GA | — | ◇ UNVERIFIED |
| NPNova Pressroom Products | Jacksonville | FL | — | ◇ UNVERIFIED |
| NBNovozymes Biologicals INC - South Broad Street | Salem | VA | — | ◇ UNVERIFIED |
| NINuset Industries, Orrco, 02 Bl (nuseti) | Salt Lake City | UT | — | ◇ UNVERIFIED |
| NUNutriag USA LTD | Biola | CA | — | ◇ UNVERIFIED |
| NBNutrition & Biosciences USA 1 LLC - Plaquemine Methocel | Plaquemine | LA | — | ◇ UNVERIFIED |
| OFOberon Fuels Kershaw Facility | Brawley | CA | — | ◇ UNVERIFIED |
| OObiter | Champaign | IL | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation | Jersey City | NJ | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP Sauget Plant | Sauget | IL | — | ◇ UNVERIFIED |
| OAOhio Aluminum Chemicals LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| OMOklahoma Materials Recycling | Atoka | OK | — | ◇ UNVERIFIED |
| OBOld Bridge Chemicals INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| OTOmaha Transloading Corporation | Omaha | NE | — | ◇ UNVERIFIED |
| OOOmni Oxide Indiana Oxide | Brazil | IN | — | ◇ UNVERIFIED |
| OIOmniprint International | Irvine | CA | — | ◇ UNVERIFIED |
 Organic Dyes and Pigments | Providence | RI | — | ◇ UNVERIFIED |
| OEOrion Engineered Carbons LLC - Ivanhoe Carbon Black Plant | Franklin | LA | — | ◇ UNVERIFIED |
| OPOrkin Pest Control | Lexington | KY | — | ◇ UNVERIFIED |
| OBOsprey Biotechnics | Sarasota | FL | — | ◇ UNVERIFIED |
| OEOxbow Energy Solutions | Texas City | TX | — | ◇ UNVERIFIED |
| PBPacific Biodiesel INC | Kahului | HI | — | ◇ UNVERIFIED |
| PLPacific Light Technologies | Portland | OR | — | ◇ UNVERIFIED |
 Pajarito Powder | Albuquerque | NM | — | ◇ UNVERIFIED |
| PEPampa Energy Center | Pampa | TX | — | ◇ UNVERIFIED |
| PAPan American Fertilizer | Guanica | PR | — | ◇ UNVERIFIED |
| PAParson Adhesives Incorporated | Evansville | IN | — | ◇ UNVERIFIED |
| PSParticle Solutions LLC | Alachua | FL | — | ◇ UNVERIFIED |
| PCParts Cleaning Technologies LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| PCPaslode CO | Covington | TN | — | ◇ UNVERIFIED |
| PCPaxar Corporation | Sayre | PA | — | ◇ UNVERIFIED |
| PEPe Ell Hulk Hauling | Aberdeen | WA | — | ◇ UNVERIFIED |
| PSPencco Sealy | Sealy | TX | — | ◇ UNVERIFIED |
| PCPeninsula Chemical CO. | San Mateo | CA | — | ◇ UNVERIFIED |
| PRPetra Research INC | Alachua | FL | — | ◇ UNVERIFIED |
| PBPflaumer Brothers | Ewing | NJ | — | ◇ UNVERIFIED |
| PIPha Industries | Orange | MA | — | ◇ UNVERIFIED |
| PIPharmasyn INC | Libertyville | IL | — | ◇ UNVERIFIED |
| PIPharmatech International INC | Fairfield | NJ | — | ◇ UNVERIFIED |
| PIPhenova INC | Golden | CO | — | ◇ UNVERIFIED |
| PSPhoto Systems INC | Dexter | MI | — | ◇ UNVERIFIED |
| PSPhoto Systems INC Bottcher America INC | Dexter | MI | — | ◇ UNVERIFIED |
| PIPlexmar Incorporated | Houston | TX | — | ◇ UNVERIFIED |
| PIPolarome International | Newark | NJ | — | ◇ UNVERIFIED |
| PCPolo Cleaners 2 | Middletown | RI | — | ◇ UNVERIFIED |
 Polycarbon Industries INC | Ayer | MA | — | ◇ UNVERIFIED |
| PSPolychem Services Inc., LLC | Chicago Heights | IL | — | ◇ UNVERIFIED |
| PAPolymer Additives - Cleveland Plant | Cleveland | OH | — | ◇ UNVERIFIED |
