The chemical companies in Massachusetts include large, established firms. Cabot Corporation, founded in 1882, specializes in performance materials, and Saint-Gobain Abrasives, established in 1885, provides abrasive solutions. A.W. Chesterton Company, from 1884, offers industrial solutions like fluid sealing systems, while MKS Inc., founded in 1961, focuses on technology solutions for semiconductor manufacturing. These companies often have a global presence.
A common thread among these companies is their focus on advanced materials and specialized industrial applications. Many, such as Entegris, are involved in semiconductor manufacturing, while others like Hollingsworth & Vose develop filtration and energy storage materials. There is a cluster of headquarters in Boston, with Cabot Corporation, Orbia, and Koura all located there.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Entegrisentegris.com
A global leader in advanced science-based solutions for technology challenges, driving innovation with artificial intelligence, augmented reality, and IoT technologies |
6,612 | |||
| 2 | 4,581 | ||||
| 3 |
Cabot Corporationcabotcorp.com
Global specialty chemical and performance materials company providing solutions to address current challenges and future customer needs worldwide. |
3,719 | |||
| 4 |
Saint-Gobain Abrasivessaint-gobain-surfacesolutions.com
The company offers powerful and precise abrasives solutions for various markets, focusing on customization, performance, and safety with global presence |
3,196 | |||
| 5 | 1,300 | ||||
| 6 |
A.W. Chesterton Companychesterton.com
A global provider of industrial solutions, specializing in fluid sealing systems, protective coatings, lubricants, and MRO chemicals with a focus on customer service and support |
1,052 | |||
| 7 |
Hollingsworth & Vosehollingsworth-vose.com
Development and supply of advanced filtration and energy storage materials for diverse industries, enhancing health, sustainability, and efficiency worldwide. |
975 | |||
| 8 |
Gradiantgradiant.com
Provides advanced water and wastewater treatment solutions for critical industries, reducing water usage, reclaiming resources, and renewing wastewater into freshwater. |
859 | |||
| 9 |
Flexconflexcon.com
A family-owned provider of innovative coatings, film laminations, and functional technologies, focused on creating sustainable solutions for a variety of markets globally |
695 | |||
| 10 |
Kouraorbia-fem.com
Development and manufacture of fluoroproducts for electric vehicles, energy storage, infrastructure, refrigeration, and low-GWP inhaler propellants worldwide. |
482 | |||
| 11 |
Chase Corporationchasecorp.com
A leading manufacturer of protective materials for high reliability applications, offering industrial coatings, tapes, adhesives, and sealants globally under trusted brand names |
481 | |||
| 12 |
Aspen Aerogelsaerogel.com
A technology leader in sustainability, offering Aerogel solutions for global megatrends in resource efficiency, electrification, and sustainability across various industries |
455 | |||
| 13 |
ICP Groupicpgroup.com
Supplier of professional building envelope, cementitious, and sports surface products with extensive brand portfolios and specialized training programs. |
390 | |||
| 14 |
Shawmut Corporationshawmutcorporation.com
A leading provider of engineered flexible multi-layer materials for automotive, medical, and other industries, with a focus on innovation and global expansion |
380 | |||
| 15 |
Caplugscaplugs.com
A global leader in custom molded components, masking solutions, and product protection with extensive manufacturing capabilities and a team of experts |
357 | |||
| 16 |
Web Industrieswebindustries.com
Precision converting and outsource manufacturing services for aerospace, energy, wire, commercial, consumer, and medical markets with flexible material solutions. |
337 | |||
| 17 |
Alphagary, an Orbia businessalphagary.com
A global leader in specialty polymer compounds and additives, offering sustainable solutions for various industries worldwide through innovative formulations and global distribution |
331 | |||
| 18 |
OrthoLiteortholite.com
A global leader in foam technology, creating innovative insoles for top footwear brands with a focus on comfort, performance, and sustainability |
326 | |||
| 19 |
Cambridge Isotope Laboratories, Incisotope.com
Global leader in stable isotope separation and labeling for biochemical compounds, contributing to medical, research, and diagnostic advancements worldwide |
303 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 20 |
Bemis Associatesbemisworldwide.com
Bemis partners with leading brands to design and construct innovative, high-performance products, focusing on collaboration, creativity, and commitment to employees |
284 | |||
| 21 |
Saint-Gobain Research North Americasgr-northamerica.saint-gobain.com
Innovative research lab developing ceramic and polymer solutions for energy efficiency, resource conservation, and various industries through advanced manufacturing processes |
187 | |||
| 22 |
GreenLight Biosciencesgreenlightbiosciences.com
Develop and commercialize environmentally friendly, easy-to-use crop protection solutions leveraging natural methods to support sustainable farming practices. |
182 | |||
| 23 | 157 | ||||
| 24 |
NEPTCOchasecorp.com
Global leader in engineering and manufacturing materials for commercial, industrial, and military applications, specializing in laminates, adhesives, and polymeric coatings for cables and electronics |
99 | |||
| 25 |
Saint-Gobain Ceramics - SGPlinkedin.com
The company designs and manufactures advanced ceramic materials for various industries worldwide, offering tailored solutions to meet tough application requirements |
82 | |||
| 26 |
Universal Plastics Corporationuniversalplastics.com
Custom plastic products manufacturer offering expertise in thermoforming, injection molding, and blow molding for various industries, with a focus on high quality and innovative solutions |
73 | |||
| 27 |
G&F Precision Molding, Inc.gandfprecision.com
Privately held custom injection molder offering thermoplastic and liquid silicone rubber molding, design, prototyping, mold making, and value add operations ISO certified for quality |
65 | |||
| 28 |
Evolved By Naturebiotech.evolvedbynature.com
Biotech company creating sustainable molecules with Activated Silkโข technology to improve product performance and environmental impact in various industries |
60 | |||
| 29 |
Fosta-Tek Optics, Inc.fosta-tek.com
A leading US-based manufacturer of high-quality polymer components for optics and lenses, serving various industries with advanced coating and testing capabilities |
38 | |||
| 30 |
Pittsfield Plastics Engineering, LLCpittsplas.com
Industry-leading injection molder and mold maker offering plastic spools, reels, cores, bobbins for packaging various products in a fully equipped manufacturing facility |
38 | |||
| 31 |
Barbour Plastics, Inc.barbourplastics.com
Specializing in extruding premium thermoplastic profiles for various applications, with diverse equipment to process small to large profiles efficiently Delivering unmatched service and quality |
29 | |||
| 32 |
Foundation Alloyfoundationalloy.com
This company specializes in transforming the metal parts manufacturing industry through advanced technology, offering superior mechanical properties and scalable manufacturing solutions |
19 | |||
| 33 |
Ionic Materials, Incionicmaterials.com
Innovative polymer technology company creating customized solutions for energy storage, healthcare, and 5G applications to enable a better and safer world |
14 | |||
| 34 |
GXT Green, Incgxtgreen.com
A company that helps packaging and plastics industries reduce their environmental impact by providing sustainable, recyclable materials for various products |
10 | |||
| 35 |
INDUSTRIAL POLYMERS & CHEMICALS, INC.industrial-polymers.com
Supplier of fiberglass reinforcements to the Abrasives Industry, offering cutting, coating, and kitting services for various materials Specializes in resin marketing and specialty sewing/assembly |
10 | |||
| 36 |
Multiscale Systemsmultiscalesystems.com
Innovative industrial solutions utilizing high-performance materials and advanced manufacturing techniques |
5 | |||
| 37 |
AtoMe Inc
Innovative startup leveraging 3D printing and machine learning to design enhanced materials for energy, transportation, aviation, and aerospace industries |
3 | |||
| 38 |
GS Rubber Industries LLCgsrind.com
Manufacturer of standard & custom molded rubber products, including seals, gaskets, pet toys, and more Services include prototyping, compounding, molding, and engineering support |
3 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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The same list elsewhere in United States
- Chemical companies in the United States 1,383
- Chemical companies in Texas 140
- Chemical companies in Ohio 120
- Chemical companies in California 112
- Chemical companies in Pennsylvania 95
- Chemical companies in Illinois 74
- Chemical companies in New York State 61
- Chemical companies in Michigan 58
- Chemical companies in North Carolina 54
- Chemical companies in Georgia 51
- Chemical companies in New Jersey 51
- Chemical companies in Indiana 34
- Chemical companies in Florida 33
- Chemical companies in Alabama 31
- Chemical companies in South Carolina 31
- Chemical companies in Wisconsin 31
- Chemical companies in Missouri 30
- Chemical companies in Minnesota 28
- Chemical companies in Tennessee 27
- Chemical companies in Connecticut 25
- Chemical companies in Houston 47