| PCPerrigo Company | Greenville | SC | — | ◇ UNVERIFIED |
| PPPfizer Pharmaceuticals LLC | Barceloneta | PR | — | ◇ UNVERIFIED |
| PHPharmacia Hepar INC | Franklin | OH | — | ◇ UNVERIFIED |
| PCPilot Chemical Company of Ohio Lockland Plant | Lockland | OH | — | ◇ UNVERIFIED |
| PWPlaskolite West Incorporated | Compton | CA | — | ◇ UNVERIFIED |
| PCPolymer Chemistry Chocolate Bayou LLC | Alvin | TX | — | ◇ UNVERIFIED |
| POPoly One CORP | Seabrook | TX | — | ◇ UNVERIFIED |
| PCPolyone CORP | Norwalk | OH | — | ◇ UNVERIFIED |
| PCPolyone Corporation | Henry | IL | — | ◇ UNVERIFIED |
| PLPolystar, LLC | Dalton | GA | — | ◇ UNVERIFIED |
 Polytek Development CORP. | Franklin | IN | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Dalton | GA | — | ◇ UNVERIFIED |
| POPosco (printers Oil Supply Co) | Wilmington | MA | — | ◇ UNVERIFIED |
| PFPremier Foam INC | Newnan | GA | — | ◇ UNVERIFIED |
| PCPressure Chem Co/pgh | Pittsburgh | PA | — | ◇ UNVERIFIED |
| PAPride Aci Sanitary Maintenance & Supplies | Avon Park | FL | — | ◇ UNVERIFIED |
| PCPromega Component Manufacturing Center | Fitchburg | WI | — | ◇ UNVERIFIED |
| PCPssi Chemical Innovations | Kieler | WI | — | ◇ UNVERIFIED |
| PTPurification Techs INC | Chester | CT | — | ◇ UNVERIFIED |
 Quad Graphics INC Chemical Research / Technology | Hartford | WI | — | ◇ UNVERIFIED |
| RFReal Fleet Solutions, LLC | Cocoa | FL | — | ◇ UNVERIFIED |
| RAReg - Albert Lea | Albert Lea | MN | — | ◇ UNVERIFIED |
| RNReg Newton, LLC | Newton | IA | — | ◇ UNVERIFIED |
| RBReliable Biopharmaceutical-walton Road | Overland | MO | — | ◇ UNVERIFIED |
| RBRenewable Bio Fuels | Port Neches | TX | — | ◇ UNVERIFIED |
| REResinoid Engineering CORP | Skokie | IL | — | ◇ UNVERIFIED |
| RARevitalizing Auto Communities Environmental Response Trust | Anderson | IN | — | ◇ UNVERIFIED |
| RHR H Crown CO INC | Johnstown | NY | — | ◇ UNVERIFIED |
| RCRho Chemicals CO | Joliet | IL | — | ◇ UNVERIFIED |
 Rochester Midland CORP | Montgomery | IL | — | ◇ UNVERIFIED |
| RVRoche Vitamins Inc., Freeport, Texas | Freeport | TX | — | ◇ UNVERIFIED |
| RIRöchling Industrial Cleveland (1318544510) | South Euclid | OH | — | ◇ UNVERIFIED |
| RLRoebic Laboratories, INC. | Orange | CT | — | ◇ UNVERIFIED |
| RARohm and Haas - Hayward Plant | Hayward | CA | — | ◇ UNVERIFIED |
| RGRousselot Gelatine | Peabody | MA | — | ◇ UNVERIFIED |
| RCRoyal Chemical | East Stroudsburg | PA | — | ◇ UNVERIFIED |
| RCRoyal Chemical CO | Chattanooga | TN | — | ◇ UNVERIFIED |
| RCRyerson Coil Pickling | Chicago | IL | — | ◇ UNVERIFIED |
| SMSchick Manufacturing, INC. | Milford | CT | — | ◇ UNVERIFIED |
| SLSeatex LLC | El Campo | TX | — | ◇ UNVERIFIED |
| SCSepton Company of America | Pasadena | TX | — | ◇ UNVERIFIED |
| SFSes Foam | Spring | TX | — | ◇ UNVERIFIED |
| STSe Tylose USA INC. and Its Affiliates | Plaquemine | LA | — | ◇ UNVERIFIED |
| SEShaw El Dorado, LLC | El Dorado | AR | — | ◇ UNVERIFIED |
| SASigma - Aldrich Co-sigma Chemical Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SPSlide Products INC | Wheeling | IL | — | ◇ UNVERIFIED |
| SPSolutions Plus INC | Amelia | OH | — | ◇ UNVERIFIED |
| SCSouthern Chemical & Textiles | Dalton | GA | — | ◇ UNVERIFIED |
| SISouthern Industrial Chemicals, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| STSpartech Townsend | Pleasant Hill | IA | — | ◇ UNVERIFIED |
