Chemical manufacturers in Connecticut
Connecticut has 77 chemical makers in EPA records, facilities that list codes for basic, organic and specialty chemicals, resins and rubber. The most are in Danbury, New Haven and Stratford. That is under 1% of the 8,779 such facilities nationwide, and Connecticut ranks #32 of 51 states.
- Product
- Chemical manufacturers
- Facilities
- 77
- State rank
- #32
- NAICS
- 325110 and 15 related codes
- Revised
- November 1, 2026
Facilities in Connecticut
These are active facilities in EPA's ECHO database that list a code for basic, organic and specialty chemicals, resins and rubber. The 40 shown first are the ones with the most EPA program records, which usually means the larger sites.
| Facility | City | What EPA lists |
|---|---|---|
| Vanderbilt Chemicals, LLC Bethel | Bethel | Petrochemical Manufacturing |
| Chemtura | Naugatuck | Petrochemical Manufacturing |
| Americas Styrenics Polystyrene Plant | Ledyard (Gales Ferry) | Plastics Material and Resin Manufacturing |
| Resin Solutions LLC - Stratford Facility | Stratford | All Other Basic Organic Chemical Manufacturing |
| Hampford Research Inc | Stratford | All Other Basic Organic Chemical Manufacturing |
| Pharmacia & Upjohn (Former) | North Haven | Petrochemical Manufacturing |
| Roehm America LLC | Wallingford | Plastics Material and Resin Manufacturing |
| Cytec Ind Inc | Wallingford | Plastics Material and Resin Manufacturing |
| King Industries, Inc. | Norwalk | Petrochemical Manufacturing |
| 3M Purification Inc | Meriden | Plastics Material and Resin Manufacturing |
| Macdermid Specialty Chemical Services | Waterbury | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Bedoukian Research, Inc | Danbury | All Other Basic Organic Chemical Manufacturing |
| Conard Corporation, The | Glastonbury | Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing |
| Electric Cable Compounds | Naugatuck (Historical) | Plastics Material and Resin Manufacturing |
| Mannkind Corporation | Danbury | All Other Basic Organic Chemical Manufacturing |
| Rsa Corporation | Danbury | All Other Basic Organic Chemical Manufacturing |
| Macdermid Enthone | West Haven | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Sumitomo Bakelite North America, Inc. | Manchester | Plastics Material and Resin Manufacturing |
| Drew Marine USA | Waterbury | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Miller Stephenson Chemical | Danbury | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Rem Surface Engineering | Southington | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Specialty Minerals Dolomite Plant | Canaan | Other Basic Inorganic Chemical Manufacturing |
| Allnex USA Inc -Wallingford Ct Plant | Wallingford | Plastics Material and Resin Manufacturing |
| American Greenfuels, LLC | New Haven | Ethyl Alcohol Manufacturing |
| Bomar Specialties, LLC | Torrington | Plastics Material and Resin Manufacturing |
| Brand Nu Laboratories Inc | Meriden | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| King Industries | Waterbury | All Other Basic Organic Chemical Manufacturing |
| Laticrete Int'l Inc | Bethany | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Nalas Engineering Services LLC | Norwich | All Other Basic Organic Chemical Manufacturing |
| Pharmco Products | Brookfield | Ethyl Alcohol Manufacturing |
| Photronics, Inc. | Brookfield | Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing |
| Uyemura International Corp, Utc Technical Ctr | Southington | Other Basic Inorganic Chemical Manufacturing |
| Active Oil Inc (Acv) | New Haven | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Airgas USA LLC - Bozrah | Bozrah | Industrial Gas Manufacturing |
| Americas Styrenics Allyns Point Plant | Gales Ferry | Plastics Material and Resin Manufacturing |
| Americas Styrenics, LLC | Gales Ferry | Plastics Material and Resin Manufacturing |
| Arkwrights Advanced Coating | Guilford | Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing |
| Azure Water Services | West Haven | All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| Biodiesel One Ltd | Southington | All Other Basic Organic Chemical Manufacturing |
| Biopur Inc | Bethlehem | All Other Basic Organic Chemical Manufacturing |
Industry codes are reported by facilities to EPA programs and are not checked here. A few listings may be repair shops, distributors or recyclers. How these records work.
Where they are
- Danbury: 6
- New Haven: 5
- Stratford: 4
- North Haven: 4
- Wallingford: 4
- Waterbury: 4
By product code
- Plastics Material and Resin Manufacturing (NAICS 325211): 10 of those shown
- All Other Basic Organic Chemical Manufacturing (NAICS 325199): 9 of those shown
- All Other Miscellaneous Chemical Product and Preparation Manufacturing (NAICS 325998): 9 of those shown
- Petrochemical Manufacturing (NAICS 325110): 4 of those shown
- Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing (NAICS 325992): 3 of those shown
- Other Basic Inorganic Chemical Manufacturing (NAICS 325180): 2 of those shown
- Ethyl Alcohol Manufacturing (NAICS 325193): 2 of those shown
- Industrial Gas Manufacturing (NAICS 325120): 1 of those shown
All chemicals manufacturing in Connecticut: 136 facilities and Census job counts.