| PPolyone | Seabrook | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| PCPolyone Corporation | Pasadena | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| PAPort Arthur Plant | Port Arthur | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PNPort Neches Plant | Port Neches | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| PSPower Service Prods INC | Weatherford | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PAPpg Architectural Finishes Waller | Waller | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PIPpg Idustries INC. Tx | Gainesville | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PPraxair | La Porte | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| PPPraxair Port Arthur Hydrogen Facility | Port Arthur | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| PTPraxair Texas City | Texas City | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| PEPrime Eco Group INC | Wharton | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PEPrince Energy LLC | Houston | TX | Chemical Manufacturing325220 | — | ◇ UNVERIFIED |
| PMPrince Minerals | Houston | TX | Chemical Manufacturing325220 | — | ◇ UNVERIFIED |
| QCQuest Chemical CORP | Houston | TX | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| RMR&d Marble INC. | Willis | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| RCReef Chemical CO INC | Odessa | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
 Reynolds Consumer Products | Temple | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RCRiverside Commodities | Evadale | TX | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc, Lone Star Plant | Deer Park | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| RARoyal Adhesives & Sealants LLC | Mansfield | TX | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| RBRoyal Baths Manufacturing CO | Richland Hills | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| RCRtp Company Crockett | Crockett | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| RCRuss Chemical | Odessa | TX | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SSachem | Austin | TX | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SPSaginaw Plant | Saginaw | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SSchnee-morehead | Irving | TX | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| SHScotts Hyponex Tyler | Tyler | TX | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| SCSelect Chemicals, LTD. | Yorktown | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SSSf Sulfur | Freeport | TX | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SRSgr Railyard | San Patricio | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SNSgs North America | Deer Park | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SASherwin Alumina Plant | Ingleside | TX | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| SCShrieve Chemical Services | Marlin | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SCSmith Corrosion Services Incorporated | Houston | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SRSocomore - Rhome | Rhome | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SSSolvay Specialty Polymers USA | Borger | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| SUSolvay USA Midland | Midland | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SISongwon International Americas INC. - La Porte | La Porte | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SLSour Lake Olefins | Sour Lake | TX | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| SUSouthern Union Gas Services LTD Emperor | Kermit | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| STSouth Texas Chlorine, INC. | Harlingen | TX | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| SPSovereign Pharmaceuticals | Fort Worth | TX | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SPSovereign Pharmaceuticals | Fort Worth | TX | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SCSpecialty Coatings CORP | Arlington | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SCSrw Cogeneration, L.p. | Orange | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| SCStarpak CORP | Houston | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing | Garland | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SPStreamline Polymers | Houston | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SCSunbelt Chemicals | Dallas | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
 Sun Chemical CORP Grand Pairie Plant | Grand Prairie | TX | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
