| GEGreystone Enterprises INC | Fairfield | CT | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| HRHampford Research INC | Stratford | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| HCHenry CO #tq3 | Fairfield | CT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| JNJSS Naugatuck, LLC | Naugatuck | CT | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| KIKing Inds INC | Norwalk | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| LCLNA Corp. | Glastonbury | CT | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| MMMetamorphic Materials INC | Winsted | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MLMilbar Labs, INC. | East Haven | CT | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| NCNorwalk, Ct | Norwalk | CT | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| OIOxford Inustries of Connecticut, INC. | New Britain | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PSP2 Sciences INC. | Naugatuck | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PIPfizer INC (formerly Pfizer Incorporated, Manufacturing and Research) | Groton | CT | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| PPProrez Performance Resins and Coatings L | South Glastonbury | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PPProrez Performance Resins and Coatings L | Rocky Hill | CT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PSProtein Sciences CORP | Meriden | CT | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| RSResin Solutions LLC (formerly Total Petrochemical and Refining) | Stratford | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| RGR & G Carting & Recycling, LLC | Southington | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| RTRist/ama Truck Terminal | North Branford | CT | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| RMRose Mill Holdings LLC | Windsor Locks | CT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RRRoss & Roberts INC | Stratford | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RCRsa CORP | Danbury | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SKSafety Kleen a Clean Harbors Company | Portland | CT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
 Sca Pharmaceuticals LLC | Windsor | CT | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SISeals-It, Inc. | Ellington | CT | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| SSSimoniz Saniclean, LLC | Rocky Hill | CT | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| SISoltec, INC. | Bethel | CT | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| SASRD Automotive, LLC | Wauregan | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SSSri Sai Nutrients, Inc | New Britain | CT | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| SBSumitomo Bakelite No. America | Manchester | CT | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| SPSyn-mar Prods INC | Ellington | CT | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| TCTechnical Coatings Laboratory L L C | Avon | CT | Paper Manufacturing322221 | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| VCValspar CORP | Rocky Hill | CT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| VRVitek Research Corporation | Naugatuck | CT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
