| PTPolymer Technology | Wilmington | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PAPpg Aerospace Cuming Microwave | Avon | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PMPp Manufacturing CORP | Framingham | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| PPPro Pel East LLC | South Deerfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
 Quantum Chemical CO Clinton Ma Plant | Clinton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RSRaytheon Systems CO | Lexington | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| RKRb Kendall Fee LLC | Cambridge | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| RIRentschler INC | Milford | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| RCRevolutionary Clinics | Fitchburg | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| SISabic Innovative Plastics | Pittsfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SISabic Innovative Plastics | Pittsfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SESaeilo Enterprises | Worcester | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SHSafc Hitech | Haverhill | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SOSalem Oil & Grease CO | Salem | MA | Chemical Manufacturing325613 | — | ◇ UNVERIFIED |
| SSanofi | Waltham | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| SSSencorp Systems Incorporated | Hyannis | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SWSherwin Williams 5229 | Lowell | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SCShipley CO INC | Newton | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SShire | North Reading | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SPShire Pharmaceuticals | Cambridge | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SESidmar Enterprises INC | Holbrook | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| SCSkyline Composite INC | Fall River | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SLSouthwin LTD | Leominster | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SPSpecialty Polymers | Leominster | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SPSplash Products INC | Ayer | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SSStainless Steel Coatings INC | South Lancaster | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SCSterling Clark Lurton | Malden | MA | Chemical Manufacturing325191 | — | ◇ UNVERIFIED |
| SGSt Gobain Performance Plastics | Taunton | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
 Sun Chemical Corporation | Mansfield | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| SPSunovion Pharmaceuticals INC | Marlborough | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SPSurface Protection Industries | North Billerica | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SLSynthetic Labs | Dracut | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| TATeknor Apex CO | Attleboro | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| TPThermedics Polymer Products | Woburn | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific | Bedford, Town of | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| TDThree Dimensional Ch | Danvers | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| TCTodays Collision & Fleet Services INC | Boston (mattapan) | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| TSTrelleborg Sealing Solutions | Northborough | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| TCTrimont Chemicals INC | Peabody | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| TATyco Adhesives LP | Lexington | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| UAUnited Aniline Company | Norwood | MA | Chemical Manufacturing325613 | — | ◇ UNVERIFIED |
| USUS Synthetics Corporation | Fitchburg | MA | Chemical Manufacturing325130 | — | ◇ UNVERIFIED |
| WCWalton Chase Elastomers INC | Hudson | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| WEWarren Environmental | Middleboro | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| WAWindfield Alloy | Lawrence | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| WBWinfield Brooks CO | Woburn | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| 1B124 Bernard East Saint Jean | East Falmouth | MA | Chemical Manufacturing325413 | 100-499 | ◐ LIKELY ACTIVE |
| 1L191 Lafayette Rd Dispensary Company LLC | Salisbury | MA | Chemical Manufacturing325411 | 20-99 | ◐ LIKELY ACTIVE |
| AIAaron Industries Corp | Leominster | MA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| AWAbcam Waltham | Waltham | MA | Chemical Manufacturing325413 | 100-499 | ◐ LIKELY ACTIVE |
