3M
- Technologies include abrasives, adhesives, non-woven fibers, films, precision coatings, fluorochemicals, ceramics, optics and microstructured surfaces. Maplewood, Minnesota.
- http://www.3m.com/

MacKenzie Corporation
- Producer of acetyl acetonates of various metals, dimethylglycine, and photoconductors, also offering custom chemical production. Located in Louisiana.
- http://www.mackenziechem.com

Mare Group
- Manufacturer of industrial chemicals, detergents, and adhesives, headquartered in Italy. Markets include the papermaking, detergent, petroleum, ceramics, food, and water treatment industries.
- http://www.maregroup.com/

Millennium Chemicals
- Supplier of raw inorganic and organic materials and product that complement coatings, colorings, reactants and intermediates, polymers and pigments industries. Products sorted by family type and industry.
- http://www.millenniumchem.com/

MercaChem
- Manufacturer of custom organic chemical compounds including building blocks, scaffolds and synthons for combinatorial chemistry or further synthesis,compounds or analogues for lead discovery or optimization, and reference compounds such as metabolites or
- http://www.mercachem.com

Martin Marietta Magnesia Specialties Inc.
- Provider of high purity magnesium oxide based products for environmental, industrial, nutritional and agricultural applications. Specialty products include flame retardants, fuel additives, refractories (steel production), dust suppressants, wastewater tr
- http://www.magspecialties.com/

Miswa Chemicals Ltd.
- Manufactures Polygard and Polytech brand chemicals.
- http://www.miswa.co.uk

Micro Powders, Inc.
- Supplier of specialized micronized waxes, wax dispersions and emulsions to the printing ink industry.
- http://www.micropowders.com/

Mann Formulated Products
- Manufactures release agents and surface treatments used in the mold making process by artists, industry, prototypers and casters around the world.
- http://www.mann-release.com/

Mitco, Inc.
- Custom specialty chemical manufacturer based in Grand Rapids, Michigan. Servicing manufacturing industries, Mitco provides technical expertise and chemical based solutions for boilers, cooling systems, waste water, specialty cleaning and sanitizing, paper
- http://www.mitcoinc.com/

Marcus Oil and Chemical
- Leader in wax technology innovation.
- http://www.marcusoil.com/

Millennium Specialty Chemicals Colors and Silica
- ISO9001 certified manufacturer of quality cadmium pigments for the glass, coatings, paint, and plastics industries. As well as quality amorphous fine particle silica products for the coatings, paper, food, pharmaceutical, plastics, and brewing industries.
- http://www.msc-sth.com/

Mitsui Chemicals America, Inc.
- Manufacturer of chemicals and intermediates, specialty polymers and engineering plastics, functional materials, electronic materials, and admer adhesive resin.
- http://www.mitsuichemicals.com/

Mintech Chemical Industries
- Manufacturers and suppliers of speciality chemicals.
- http://www.mintechchemical.com.au/

Mitsubishi Gas Chemical America, Inc.
- Commodity and natural gas chemical synthesis.
- http://www.mgc-a.com/

Microtek Laboratories, Inc.
- Specialize in the development and application of microencapsulation technologies for industrial markets with a focus on water-soluble, reactive chemicals and phase change materials.
- http://www.microteklabs.com/

Midwest Custom Chemicals
- Supplier of oilfield, refinery, industrial and wastewater treatment chemicals.
- http://www.mcc-chem.com/