Polymethyl methacrylate

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Description : 

Polymethyl methacrylate (PMMA), or plexiglass, is a transparent polymer material. Solid PMMA can be fabricated to ultrafine powder by a combination of irradiation and grinding. PMMA microspheres are commercially used in cosmetics, medical materials, and chemical materials.

Sources of Exposure: Cosmetics

Health Impacts: Polymethyl methacrylate’s use as microbeads in cosmetic products poses an environmental hazard. In addition, PMMA may contain impurities of the monomer, methyl methacrylate (MMA), a volatile synthetic chemical that is used principally in the production of cast acrylic sheet, acrylic emulsions, and molding and extrusion resins. In humans, methyl methacrylate is rapidly metabolized to methacrylic acid. This compound is a mild skin irritant in humans and has the potential to induce skin sensitization in susceptible individuals. 

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