| OPOxiteno Pasadena Plant | Pasadena | TX | — | ◇ UNVERIFIED |
| PCParamelt CORP | Rosemead | CA | — | ◇ UNVERIFIED |
| PCPaseo Cargill Energy | Kansas City | MO | — | ◇ UNVERIFIED |
| PPPeerless Products | Fort Scott | KS | — | ◇ UNVERIFIED |
| PPPerstorp Polyols, INC. (0448010133) | Toledo | OH | — | ◇ UNVERIFIED |
| PCPetrolite CORP Bakersfield Blend Plant | Bakersfield | CA | — | ◇ UNVERIFIED |
| PCPico Chemical CORP | Chicago Heights | IL | — | ◇ UNVERIFIED |
| PCPiedmont Chemical Industries I, LLC | High Point | NC | — | ◇ UNVERIFIED |
| PIPlating International INC | Franklin Park | IL | — | ◇ UNVERIFIED |
| PIPlaze INC | Saint Clair | MO | — | ◇ UNVERIFIED |
| PCPlz CORP | Bridgeview | IL | — | ◇ UNVERIFIED |
| PIPolychemie INC | Pearlington | MS | — | ◇ UNVERIFIED |
| PIPolychemie INC. - Wayne, Mi | Wayne | MI | — | ◇ UNVERIFIED |
| PAPolymer Additives - Cleveland Plant | Cleveland | OH | — | ◇ UNVERIFIED |
| PIPolymerics INC | Kent | OH | — | ◇ UNVERIFIED |
| PLPolystar, LLC | Dalton | GA | — | ◇ UNVERIFIED |
| PDPolyventive ? Dalton South | Dalton | GA | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Calhoun | GA | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Dalton | GA | — | ◇ UNVERIFIED |
| PFPort Fourchon North | Golden Meadow | LA | — | ◇ UNVERIFIED |
| PNPort Neches Terminal | Port Neches | TX | — | ◇ UNVERIFIED |
| POPosco (printers Oil Supply Co) | Wilmington | MA | — | ◇ UNVERIFIED |
| PEPpg Euclid Pretreatment & Specialty Prods | Euclid | OH | — | ◇ UNVERIFIED |
| PIPpg Industries - Delaware | Delaware | OH | — | ◇ UNVERIFIED |
| PIPpg Industries INC | La Porte | TX | — | ◇ UNVERIFIED |
| PCPressure Chem Co/pgh | Pittsburgh | PA | — | ◇ UNVERIFIED |
| PWProchem Water LLC | Elliston | VA | — | ◇ UNVERIFIED |
| PCPryor Chem CO | Pryor | OK | — | ◇ UNVERIFIED |
| PAPsc Allworth - Birmingham Facility | Birmingham | AL | — | ◇ UNVERIFIED |
| PCPssi Chemical Innovations | Kieler | WI | — | ◇ UNVERIFIED |
| PTPurcell Tire and Service Center | Anchorage | AK | — | ◇ UNVERIFIED |
| PTPurification Techs INC | Chester | CT | — | ◇ UNVERIFIED |
 Qualichem, INC. | Salem | VA | — | ◇ UNVERIFIED |
 Ques Industries INC | Cleveland | OH | — | ◇ UNVERIFIED |
| RSRefinery Specialties Hempstead Facility | Hempstead | TX | — | ◇ UNVERIFIED |
| RAReg - Albert Lea | Albert Lea | MN | — | ◇ UNVERIFIED |
| RDReg Danville LLC | Danville | IL | — | ◇ UNVERIFIED |
| RGReg Grays Harbor, LLC | Hoquiam | WA | — | ◇ UNVERIFIED |
| RNReg Newton, LLC | Newton | IA | — | ◇ UNVERIFIED |
| RPRemet Pic INC | Utica | NY | — | ◇ UNVERIFIED |
| RBRenewable Bio Fuels | Port Neches | TX | — | ◇ UNVERIFIED |
| ROResearch Organics LLC Dba Safc (1318172081) | Cuyahoga Heights | OH | — | ◇ UNVERIFIED |
| RSResearch Solvents & Chemicals INC | La Vergne | TN | — | ◇ UNVERIFIED |
| RSResin Solutions, LLC | Stratford | CT | — | ◇ UNVERIFIED |
| RCRevlis CORP | Akron | OH | — | ◇ UNVERIFIED |
| RCRevlis Corporation | Akron | OH | — | ◇ UNVERIFIED |
| RCRhein Chemie CORP | Chardon | OH | — | ◇ UNVERIFIED |
| RCRho Chemicals CO | Joliet | IL | — | ◇ UNVERIFIED |
 Rochester Midland CORP | Montgomery | IL | — | ◇ UNVERIFIED |
| RARohm and Haas Texas Incorporated | Deer Park | TX | — | ◇ UNVERIFIED |
| RURohmax USA LP | Deer Park | TX | — | ◇ UNVERIFIED |
| RWRollie Williams Paint Spot INC | Elkhart | IN | — | ◇ UNVERIFIED |
| RSRossborough Supply Src Div | Cleveland | OH | — | ◇ UNVERIFIED |
| RGRousselot Gelatine | Peabody | MA | — | ◇ UNVERIFIED |
| RIRsymrise INC | Brunswick | GA | — | ◇ UNVERIFIED |
| SISachem INC | Cleburne | TX | — | ◇ UNVERIFIED |
| SCSafety-kleen CORP INC - Davenport Facility | Davenport | IA | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems | Cranston | RI | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems -510301 | Minneapolis | MN | — | ◇ UNVERIFIED |
| SKSafety Kleen Systems INC | Des Moines | IA | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC | Dolton | IL | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems, INC. - Dolomite, Al Service Center | Dolomite | AL | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC - Linden | Linden | NJ | — | ◇ UNVERIFIED |
| SCSelect Chemistry-tyler | Tyler | TX | — | ◇ UNVERIFIED |
| STSe Tylose USA INC. and Its Affiliates | Plaquemine | LA | — | ◇ UNVERIFIED |
| STShamrock Technologies INC | Newark | NJ | — | ◇ UNVERIFIED |
| SEShaw El Dorado, LLC | El Dorado | AR | — | ◇ UNVERIFIED |
| SCShell Chemical LP - Martinez Catayst Plant | Martinez | CA | — | ◇ UNVERIFIED |
| SLShell Lubricants Fowlerville | Fowlerville | MI | — | ◇ UNVERIFIED |
| SCShrieve Chemical Services | Marlin | TX | — | ◇ UNVERIFIED |
| SESiemens Energy & Automation Incorporated | Roebuck | SC | — | ◇ UNVERIFIED |
| SASigma - Aldrich Co-sigma Chemical Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SOSigma-genosys of Texas | The Woodlands | TX | — | ◇ UNVERIFIED |
| SGSi Group | Rotterdam Junction | NY | — | ◇ UNVERIFIED |
| SGSi Group INC - South Plant | Morgantown | WV | — | ◇ UNVERIFIED |
| SCSika CORP | Aurora | IL | — | ◇ UNVERIFIED |
| SQSkw Quab Chemicals | Theodore | AL | — | ◇ UNVERIFIED |
| SPSlide Products INC | Wheeling | IL | — | ◇ UNVERIFIED |
| SCSmark CO | South Gate | CA | — | ◇ UNVERIFIED |
| SOSnap on Diagnostics | Elkhorn | WI | — | ◇ UNVERIFIED |
| SRSnf Riceboro Plant | Riceboro | GA | — | ◇ UNVERIFIED |
| SLSolenis LLC - Suffolk | Suffolk | VA | — | ◇ UNVERIFIED |
| SPSolenis-macon Plant | Macon | GA | — | ◇ UNVERIFIED |
| SSSolid Start INC | Lakeland | FL | — | ◇ UNVERIFIED |
| SISolutia INC Anniston Plant | Anniston | AL | — | ◇ UNVERIFIED |
| SISolutia INC - Indian Orchard Plant | Springfield | MA | — | ◇ UNVERIFIED |
| SISolutia INC Krummrich Il (part) | Sauget | IL | — | ◇ UNVERIFIED |
| SUSolvay USA Midland | Midland | TX | — | ◇ UNVERIFIED |
| SISongwon International Americas INC. - La Porte | La Porte | TX | — | ◇ UNVERIFIED |
 South Coast Terminals Strang Road Facility | La Porte | TX | — | ◇ UNVERIFIED |
| SLSouthwin LTD Nevada | Sparks | NV | — | ◇ UNVERIFIED |
| SLSpecchem, LLC | Kansas City | KS | — | ◇ UNVERIFIED |
| SISpecialty Industrial Products, INC. | Spartanburg | SC | — | ◇ UNVERIFIED |
| SCStabond CORP | Gardena | CA | — | ◇ UNVERIFIED |
| SCStepan Company - Fieldsboro Plant | Fieldsboro | NJ | — | ◇ UNVERIFIED |
| SCSternocandlelamp CO LLC | Memphis | TN | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing CO | Painesville | OH | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing Company | Vandalia | OH | — | ◇ UNVERIFIED |
| SCStruktol Company of America | Cuyahoga Falls | OH | — | ◇ UNVERIFIED |
| SCStruktol CO. of America | Villa Rica | GA | — | ◇ UNVERIFIED |
