| CHClean Harbors Technical Services - North Andover Facility | North Andover | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| CPConnoisseurs Products CORP | Woburn | MA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| CCConsolidated Color | Peabody | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CCContinental Chemical & Coatings | Woburn | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| CPCookson Performance Plastics | Worcester | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| CCCreative Chemicals INC | Holyoke | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CTCri Tech | Hanover | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| CICri-tech INC | Hanover | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| CICytec Industries | Springfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| DPDurant Performance Coatings INC | Revere | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| ECEastern Chem Lac | Malden | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| EPEastern Process Company | Hingham | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| EFEast Freetown Auto Salvage LLC | Freetown | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| EPEcm Plastics INC | Worcester | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| EIE I Dupont De Nemours - New Prods Plant | Westwood | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| EIE Ink CORP | Cambridge, Town of | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| EIE Ink Corporation | Cambridge | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| EIEisai INC | Andover | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| EIEisai INC | Andover | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ESElastomer Solutions INC | Leominster | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ESEmd Serono Research and Development Inst | Billerica | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ESEmd Serono Research Institute INC | Rockland | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ECEmerson & Cuming | Canton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECEmerson & Cuming Composite Materials | Canton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECEmerson & Cuming Microwave Products | Randolph | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| EEntegris | Bedford | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| EIErcon INC | Wareham | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| FSFiberspar Spoolable Products INC | West Wareham | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| FCFlo Chemical CORP | Ashburnham | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| FRFore River Shipment & Iron Works INC | Quincy | MA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| FRFormer Rohm Tech INC Facility | Malden | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| FSFuller System INC | Woburn | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| GAGcp Applied Technologies INC | Wilmington | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| GAGcp Applied Technologies INC. | Cambridge | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| GIGe Ionics | Watertown | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| GCGenzyme CORP | Allston | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| GDGenzyme Drug Discovery & Development | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| GAGillette Andover Manufacturing Center | Andover | MA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| GCGloucester Company | Franklin | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| GTGoodyear Tire & Rubber | New Bedford | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| GIGotham Ink of New England | Marlborough | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| HHHoliday Housewares | Leominster | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| HCHyperion Catalysis INC | Cambridge | MA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| IPIdenix Pharmaceuticals INC | Cambridge | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| INImpact Nano 153 Quabbin Boulevard | Orange | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| INIndependent Nail Company | Taunton | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| IIIndusol INC | Sutton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ICInnovative Coatings INC | Medway | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ICInterpolymer CORP | Canton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| IPItw Polymers Sealants North America | Rockland, Town of | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
