| RARoehm America LLC | Wallingford | CT | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| AOActive Oil INC (acv) | New Haven | CT | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| AGAmerican Greenfuels, LLC | New Haven | CT | Chemical Manufacturing325193 | — | ◐ LIKELY ACTIVE |
| ASAmericas Styrenics Allyns Point Plant | Gales Ferry | CT | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| CCChemstation Connecticut | South Windsor | CT | Chemical Manufacturing325611 | — | ◐ LIKELY ACTIVE |
| DIDur-a-flex INC | East Hartford | CT | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| DNDyno Nobel | Simsbury | CT | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
| KNKuehne New Haven LLC | New Haven | CT | Chemical Manufacturing325131 | — | ◐ LIKELY ACTIVE |
| NENalas Engineering Services LLC | Centerbrook | CT | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| PDPlastic Diversity Solutions | Dayville | CT | Chemical Manufacturing325991 | — | ◐ LIKELY ACTIVE |
| PTPurification Techs INC | Chester | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| RSResin Solutions, LLC | Stratford | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| SMSpecialty Minerals Dolomite Plant | Canaan | CT | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| BMBepuit Managements LLC | Derby | CT | Chemical Manufacturing325611 | — | ▲ REPORTED CLOSED |
Bioxcel Therapeutics, INC. | New Haven | CT | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| BLBrand-nu Laboratories | Meriden | CT | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
Detect INC | Guilford | CT | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |
Invivyd, INC. | New Haven | CT | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| MIMacdermid, Incorporated | Waterbury | CT | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| MLMetabiome, LLC | New Haven | CT | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| MGMidsun Group, INC | Southington | CT | Chemical Manufacturing325212 | — | ◐ LIKELY ACTIVE |
| OSOne Stamford Forum, Purdue Pharma L.P. | Stamford | CT | Chemical Manufacturing325412 | 100-499 | ◐ LIKELY ACTIVE |
| PIPfizer INC (formerly Pfizer Incorporated, Manufacturing and Research) | Groton | CT | Chemical Manufacturing325411 | — | ◐ LIKELY ACTIVE |
| RIRnaconnect, INC. | Branford | CT | Chemical Manufacturing325199 | — | ▲ REPORTED CLOSED |
Sacyl Pharmaceuticals, INC. | Old Greenwich | CT | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| ASAmericas Styrenics Polystyrene Plant | Ledyard (gales Ferry) | CT | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| CChemtura | Naugatuck | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| FRFluoropolymer Resources Inc. | Windham | CT | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| KIKing Industries | Waterbury | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| MSMacdermid Specialty Chemical Services | Waterbury | CT | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| MLMilbar Labs, INC. | East Haven | CT | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| PDPlastic Design INC | Middletown | CT | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| SISeals-It, Inc. | Ellington | CT | Chemical Manufacturing325212 | — | ◐ LIKELY ACTIVE |
| VRVitek Research Corporation | Naugatuck | CT | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| 1W100 Waterfront Street | New Haven | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| BUByk USA INC | Wallingford | CT | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| BUByk USA LLC | North Haven | CT | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| DNDetotec North America, INC. | Sterling | CT | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
| GNGlanbia Nutritionals (na) INC. | West Haven | CT | Chemical Manufacturing325411 | — | ◐ LIKELY ACTIVE |
| PUPharmacia & Upjohn (former) | North Haven | CT | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| RCRsa CORP | Danbury | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| 5P5n Plus | Fairfield | CT | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| 5P5n Plus INC | Trumbull | CT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| AAplicare | Meriden | CT | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BIBeiersdorf, INC. | Norwalk | CT | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BCBlue Crest INC | Danbury | CT | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| BBBridgeport Biodiesel LLC | Bridgeport | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
Bristol-myers Squibb Research & Development | Wallingford | CT | Chemical Manufacturing325412 | — | ▲ REPORTED CLOSED |
| CCarbolabs | Bethany | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CICytec Ind INC | Wallingford | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |