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Chemical Manufacturing in Connecticut

NAICS 325 · CT

This register lists 268 facilities in Connecticut. The Bureau of Labor Statistics counted 192 establishments in the Chemical Manufacturing industry in Connecticut during 2025. SCA Pharma Windsor, located in Windsor, employed 357 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines

Biggest counties

South Central Connecticut60Capitol59Western Connecticut38Naugatuck Valley27Southeastern Connecticut21Greater Bridgeport20Lower Connecticut River Valley18Northeastern Connecticut12

Biggest cities

Plants in Connecticut198 FACILITIES

Listing 198 of 268: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityEmployeesStatus
Roehm America LLCWallingford— LIKELY ACTIVE
Active Oil INC (acv)New Haven— LIKELY ACTIVE
American Greenfuels, LLCNew Haven— LIKELY ACTIVE
Americas Styrenics Allyns Point PlantGales Ferry— LIKELY ACTIVE
Chemstation ConnecticutSouth Windsor— LIKELY ACTIVE
Dur-a-flex INCEast Hartford— LIKELY ACTIVE
Dyno NobelSimsbury— LIKELY ACTIVE
Kuehne New Haven LLCNew Haven— LIKELY ACTIVE
Nalas Engineering Services LLCCenterbrook20–99 LIKELY ACTIVE
Plastic Diversity SolutionsDayville— LIKELY ACTIVE
Purification Techs INCChester— LIKELY ACTIVE
Resin Solutions, LLCStratford— LIKELY ACTIVE
Specialty Minerals Dolomite PlantCanaan— LIKELY ACTIVE
Bepuit Managements LLCDerby— REPORTED CLOSED
Bioxcel Therapeutics, INC.New Haven— LIKELY ACTIVE
Brand-nu LaboratoriesMeriden20–99 LIKELY ACTIVE
Detect INCGuilford— LIKELY ACTIVE
Invivyd, INC.New Haven— LIKELY ACTIVE
Macdermid, IncorporatedWaterbury100–499 LIKELY ACTIVE
Metabiome, LLCNew Haven— LIKELY ACTIVE
Midsun Group, INCSouthington— LIKELY ACTIVE
One Stamford Forum, Purdue Pharma L.P.Stamford100–499 LIKELY ACTIVE
Pfizer INC (formerly Pfizer Incorporated, Manufacturing and Research)Groton— LIKELY ACTIVE
Rnaconnect, INC.Branford— REPORTED CLOSED
Sacyl Pharmaceuticals, INC.Old Greenwich— LIKELY ACTIVE
Americas Styrenics Polystyrene PlantLedyard (gales Ferry)— LIKELY ACTIVE
ChemturaNaugatuck— LIKELY ACTIVE
Fluoropolymer Resources Inc.Windham20–99 LIKELY ACTIVE
King IndustriesWaterbury— LIKELY ACTIVE
Macdermid Specialty Chemical ServicesWaterbury— LIKELY ACTIVE
Milbar Labs, INC.East Haven— LIKELY ACTIVE
Plastic Design INCMiddletown20–99 LIKELY ACTIVE
Seals-It, Inc.Ellington— LIKELY ACTIVE
Vitek Research CorporationNaugatuck— LIKELY ACTIVE
100 Waterfront StreetNew Haven— LIKELY ACTIVE
Byk USA INCWallingford— LIKELY ACTIVE
Byk USA LLCNorth Haven— LIKELY ACTIVE
Detotec North America, INC.Sterling— LIKELY ACTIVE
Glanbia Nutritionals (na) INC.West Haven— LIKELY ACTIVE
Pharmacia & Upjohn (former)North Haven— LIKELY ACTIVE
Rsa CORPDanbury— LIKELY ACTIVE
5n PlusFairfield— UNVERIFIED
5n Plus INCTrumbull— UNVERIFIED
AplicareMeriden— UNVERIFIED
Beiersdorf, INC.Norwalk— UNVERIFIED
Blue Crest INCDanbury— UNVERIFIED
Bridgeport Biodiesel LLCBridgeport— UNVERIFIED
Bristol-myers Squibb Research & DevelopmentWallingford— REPORTED CLOSED
CarbolabsBethany— UNVERIFIED
Cytec Ind INCWallingford— UNVERIFIED

Search all 268 facilities

All chemical manufacturing nationwide · All manufacturing in Connecticut