| 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 |
| 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 |
| PCPolyloom Corporation of America | Dayton | TN | — | ◇ UNVERIFIED |
| PAPolymer Additives - Cleveland Plant | Cleveland | OH | — | ◇ UNVERIFIED |
| PCPolymerine CO INC | New Bedford | MA | — | ◇ UNVERIFIED |
| PLPolymerine LTD | New Bedford, City of | MA | — | ◇ UNVERIFIED |
| PSPoly Scientific | Bay Shore | NY | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Calhoun | GA | — | ◇ UNVERIFIED |
| PPPorphyrin Products | Logan | UT | — | ◇ UNVERIFIED |
| PAPort Arthur Plant | Port Arthur | TX | — | ◇ UNVERIFIED |
| PIPpg Industries Inc/lake Charles Complex | Lake Charles | LA | — | ◇ UNVERIFIED |
| PCPremier Chemical Technologies | Lafayette | LA | — | ◇ UNVERIFIED |
| PFPremiere Fibers INC | Ansonville | NC | — | ◇ UNVERIFIED |
| PEPrince Energy LLC | Houston | TX | — | ◇ UNVERIFIED |
| PMPrince Minerals | Houston | TX | — | ◇ UNVERIFIED |
| PSProfrac Svcs LLC Smithfield Fac | Smithfield | PA | — | ◇ UNVERIFIED |
| PLPromerus LLC | Brecksville | OH | — | ◇ UNVERIFIED |
| PKPromo Karts | Watseka | IL | — | ◇ UNVERIFIED |
| PAProviron America INC | Friendly | WV | — | ◇ UNVERIFIED |
| QPQuapaw Products | Helena | AR | — | ◇ UNVERIFIED |
| QAQuest Automotive Products | Gnadenhutten | OH | — | ◇ UNVERIFIED |
| RCRadicispandex CORP | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| RCRaj Chemicals Americas LLC | Somerville | NJ | — | ◇ UNVERIFIED |
| RCRaschig Corporation | Richmond | VA | — | ◇ UNVERIFIED |
| RERational Energies Hc INC - Plymouth Facility | Plymouth | MN | — | ◇ UNVERIFIED |
| RCRaybo Chemical CO | Huntington | WV | — | ◇ UNVERIFIED |
| RARaytheon Aircraft Co(was Beech Aircraft) | Boulder | CO | — | ◇ UNVERIFIED |
| RERefrigerant Exchange CORP | Irwindale | CA | — | ◇ UNVERIFIED |
| RAReg Atlanta, LLC | Ellenwood | GA | — | ◇ UNVERIFIED |
| RARemet Alcohols INC | La Mirada | CA | — | ◇ UNVERIFIED |
| RERenewable Energy Group, INC. | Okeechobee | FL | — | ◇ UNVERIFIED |
| RDResin Designs LLC | Newark | CA | — | ◇ UNVERIFIED |
| RCRestoration Chemicals | Vincennes | IN | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc- Cincinnati Plant | Cincinnati | OH | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc, Lone Star Plant | Deer Park | TX | — | ◇ UNVERIFIED |
| RHRohm & Haas Electronic Materials LLC | Freeport | NY | — | ◇ UNVERIFIED |
| RCRudolf-venture Chemicals | Rock Hill | SC | — | ◇ UNVERIFIED |
| RPRycoline Products INC | Clifton | NJ | — | ◇ UNVERIFIED |
| SKSafety Kleen Systems INC - South Plainfield Facility | South Plainfield | NJ | — | ◇ UNVERIFIED |
| SSSamuel, Son &co (usa) INC. - Samuel Packaging Systems Group | Fort Mill | SC | — | ◇ UNVERIFIED |
| SNSasol North America INC - Lab Plant | Westlake | LA | — | ◇ UNVERIFIED |
| SASauget Area 2 Sites Group | Sauget | IL | — | ◇ UNVERIFIED |
| SCSelect Chemicals, LTD. | Yorktown | TX | — | ◇ UNVERIFIED |
| SRSgr Railyard | San Patricio | TX | — | ◇ UNVERIFIED |
| SNSgs North America | Deer Park | TX | — | ◇ UNVERIFIED |
| SASigma Aldrich Chemical Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SLSilar Laboratories | Scotia | NY | — | ◇ UNVERIFIED |
| SSSimplot Soilbuilders Prosser | Prosser | WA | — | ◇ UNVERIFIED |
| SISkasol INC | Oakland | CA | — | ◇ UNVERIFIED |
| SQSkw Quab Chemicals | Theodore | AL | — | ◇ UNVERIFIED |
| SOSnap on Diagnostics | Elkhorn | WI | — | ◇ UNVERIFIED |
| SPSolutia Plant | Trenton | MI | — | ◇ UNVERIFIED |
| SUSolvay USA INC | New Brunswick | NJ | — | ◇ UNVERIFIED |
| SISongwon International Americas INC. - La Porte | La Porte | TX | — | ◇ UNVERIFIED |
| SBSoutheastern Biodiesel, LLC | Athens | AL | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC | Institute | WV | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC - Glutaraldehyde Plant | Institute | WV | — | ◇ UNVERIFIED |
| SISpex Industries INC Chemical & Sample Prep | Metuchen | NJ | — | ◇ UNVERIFIED |
| SPSpi Polyols INC. | New Castle | DE | — | ◇ UNVERIFIED |
| SPSplash Products INC | Ayer | MA | — | ◇ UNVERIFIED |
| SISpontex INC | Columbia | TN | — | ◇ UNVERIFIED |
| STStar Thermoplastic Alloys & Rubbers INC | Broadview | IL | — | ◇ UNVERIFIED |
| SCStoney Creek Technologies LLC | Marcus Hook | PA | — | ◇ UNVERIFIED |
| SPStreamline Polymers | Houston | TX | — | ◇ UNVERIFIED |
| SISurtec INC | Valparaiso | IN | — | ◇ UNVERIFIED |
| SISymrise INC | Chester | NY | — | ◇ UNVERIFIED |
| SLSynthepor LLC | Nampa | ID | — | ◇ UNVERIFIED |
| SASynthomer Adhesive Tehcnologies Eastoflex and East | Longview | TX | — | ◇ UNVERIFIED |
| TITakasago International CORP (usa) | University Park | IL | — | ◇ UNVERIFIED |
| TATeknor Apex CO | Attleboro | MA | — | ◇ UNVERIFIED |
| TTeknos | Charlotte | NC | — | ◇ UNVERIFIED |
| TFTexas Fluorescence Laboratories | Austin | TX | — | ◇ UNVERIFIED |
| TLTheodor Leonhard Wax Company, INC. | Haledon | NJ | — | ◇ UNVERIFIED |
| TSThomas Swan Opelika, INC. | Opelika | AL | — | ◇ UNVERIFIED |
| TCThree Creek Bioenergy | Sheffield | OH | — | ◇ UNVERIFIED |
| TPTicona Polymers, INC. | Bishop | TX | — | ◇ UNVERIFIED |
| TCTotal Clean Pasadena Tank Wash | Pasadena | TX | — | ◇ UNVERIFIED |
| TFToxguard Fluid Technologies INC | Stanton | CA | — | ◇ UNVERIFIED |
| TCTwentyfirst Century Biochemic | Marlborough | MA | — | ◇ UNVERIFIED |
| TBTwist Bioscience | Wilsonville | OR | — | ◇ UNVERIFIED |
| UNUnc Naval Products | Norwich | CT | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Tucker Latex Plant | Tucker | GA | — | ◇ UNVERIFIED |
| UIUnited Initiators | Theodore | AL | — | ◇ UNVERIFIED |
| UOUnited Organics CORP | Williamston | NC | — | ◇ UNVERIFIED |
| UBUniversal Bioenergy of North America INC | Nettleton | MS | — | ◇ UNVERIFIED |
| UOUniversity of Portland | Portland | OR | — | ◇ UNVERIFIED |
| UEUSA Environment | Pasadena | TX | — | ◇ UNVERIFIED |
| URUSA Resources Technology LLC | Elizabeth | NJ | — | ◇ UNVERIFIED |
| UBUS Biofuels INC. | Rome | GA | — | ◇ UNVERIFIED |
| VSVantage Specialty Ingredients INC | Englewood | OH | — | ◇ UNVERIFIED |
| VIVarn International, INC. | Houston | TX | — | ◇ UNVERIFIED |
| VHVertellus Health & Specialty Products LLC | Delaware Water Gap | PA | — | ◇ UNVERIFIED |
