| CNColorcon No Tox | Chalfont | PA | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
| CCCoopers Creek Chem Corp/conshohocken | Conshohocken | PA | Chemical Manufacturing325194 | — | ◐ LIKELY ACTIVE |
| CCCorixa CORP Dba Glaxo Smith Kline Vaccin | Marietta | PA | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| CLCrayola Llc/bethlehem Plt | Bethlehem | PA | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| CICroda INC Lamar Mfg | Mill Hall | PA | Chemical Manufacturing325411 | — | ◐ LIKELY ACTIVE |
| ESEcho Scientific | Pittsburgh | PA | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| EPEfs Plastics | Hazle Township | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| EIEisai Inc (215) | Exton | PA | Chemical Manufacturing325414 | 20-99 | ◐ LIKELY ACTIVE |
| EIEntegris, INC. | Ambler | PA | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| EDEnzyme Development Corporation | Scranton | PA | Food Manufacturing311999 | 20-99 | ◐ LIKELY ACTIVE |
| ESEsstech Site B | Essington | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| FTFreeport Terminals | Freeport | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| FBFrontida BioPharm LLC. - Dungan | Philadelphia | PA | Chemical Manufacturing325411 | 20-99 | ◐ LIKELY ACTIVE |
| GBGe Betz Trevose Fac | Trevose | PA | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| GMGlaxosmithkline/upper Merion Biopharm | West Conshohocken | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| GCGreenwood Clnr/bristol | Fairless Hills | PA | Chemical Manufacturing325191 | — | ◐ LIKELY ACTIVE |
| GDGrow Defender | York | PA | Chemical Manufacturing325320 | — | ◐ LIKELY ACTIVE |
| GFGrowmark Fs LLC Somerset Fac | Somerset | PA | Chemical Manufacturing325314 | — | ◐ LIKELY ACTIVE |
| GVGSK Vaccines Marietta, PA | Marietta | PA | Chemical Manufacturing325411 | 100-499 | ◐ LIKELY ACTIVE |
| GCGuardian Csc, LLC | Hellam | PA | Chemical Manufacturing325998 | 20-99 | ▲ REPORTED CLOSED |
| GPG&w Pa Lab/sellersville | Sellersville | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| HGHammond Group INC | Pottstown | PA | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
| HEHansen Eng Inc/west Alexander | West Alexander | PA | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| HCHenwil CORP Swi | Newell | PA | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| ICIconx Chemicals | Canonsburg | PA | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| IRIndependent Refining CO Llc/exeter | Pittston | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| I2Inventions 2000 INC | Wyomissing | PA | Chemical Manufacturing325320 | — | ◐ LIKELY ACTIVE |
| JBJanssen Biotech, INC. | Malvern | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| JRJanssen Research & Development Llc/lower Gwynedd | Spring House | PA | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| KBKenvue Brands Llc/whitemarsh Twp | Fort Washington | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| KFKnf Flexpak Corporation | Tamaqua | PA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| KTKvk Tech Inc/ Terry Dr | Newtown | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| LELake Erie Biofuels LLC d/b/a Hero BX | Erie | PA | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
Lane Enterprises Inc/carlisle | Carlisle | PA | Chemical Manufacturing325220 | — | ◐ LIKELY ACTIVE |
| LCLord CORP | Saegertown | PA | Chemical Manufacturing325520 | — | ◐ LIKELY ACTIVE |
| LSLtv Steel Coompany INC Aliquippa Works | Aliquippa | PA | Chemical Manufacturing325300 | — | ◐ LIKELY ACTIVE |
| MTManns Towing/pottstown | Pottstown | PA | Chemical Manufacturing325991 | — | ◐ LIKELY ACTIVE |
| MVMedimmune Vaccines INC | Philadelphia | PA | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| MLMesser LLC Braddock Plt | Braddock | PA | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| MSMsa Safety Pittsburgh Mfg Llc/murrysville Plt | Murrysville | PA | Chemical Manufacturing325410 | — | ◐ LIKELY ACTIVE |
| OCOccidental Chemical CORP | Pottstown | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| OAOxford Auto Body/oxford | Oxford | PA | Chemical Manufacturing325100 | — | ◐ LIKELY ACTIVE |
| PGPa Gellner & CO. L.l.c. | Hometown | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| PCPMC Crystal | Lansdale | PA | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| PQP Q | Conshohocken | PA | Chemical Manufacturing325131 | — | ◐ LIKELY ACTIVE |
| PCPq Corporation | Chester | PA | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| QUQEMETICA US Silica - Monroeville | Monroeville | PA | Chemical Manufacturing325180 | 1-19 | ◐ LIKELY ACTIVE |
| QSQuotient Sciences GV | Garnet Valley | PA | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| QSQuotient Sciences Philadelphia LLC | Boothwyn | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| RIReading Industries INC | Reading | PA | Paper Manufacturing322211 | 20-99 | ◐ LIKELY ACTIVE |