The mixing process usually takes no more than 2 min. Methyl methacrylate is an eye, skin, and mucous membrane irritant in concentrations at or above 170 to 250 ppm. This chemical has also been reported to be mutagenic, but has not been found to be carcinogenic in rats or mice. Engineering controls A local exhaust hood should be used to conduct exhaust fumes from the area in which methyl methacrylate is mixed. A tent hood may be used unless mixing can be done in a separately ventilated area.
Portable hoods are available for operating room use.
Protective equipment Workers who handle methyl methacrylate should wear personal protective equipment and clothing. This may include gloves, goggles, face shields, and respirators, as appropriate. Portable hoods are available for operating room use. Work practices Workers should be instructed to avoid touching contaminated hands or gloves to their eyes or mouths. Medical Monitoring Pre-exposure data should be recorded for the skin and respiratory systems of workers who may be exposed to methyl methacrylate.