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Methyl Methacrylate

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Methyl Methacrylate Common Name: METHYL METHACRYLATE CAS Number: 80-62-6 RTK Substance number: 1277 DOT Number: UN 1247 Date: September 1996 Revision: July 2002 ------------------------------------------------------------------------- ------------------------------------------------------------------------- HAZARD SUMMARY * Methyl Methacrylate can affect you when breathed in. * Exposure to hazardous substances should be routinely * Methyl Methacrylate may damage the developing fetus. evaluated. This may include collecting personal and area * Contact can irritate the eyes, skin, nose and throat. air samples. You can obtain copies of sampling results * Breathing Methyl Methacrylate can irritate the lungs from your employer. You have a legal right to this causing coughing and/or shortness of breath. Higher information under OSHA 1910.1020. exposures can cause a build-up of fluid in the lungs * If you think you are experiencing any work-related health (pulmonary edema), a medical emergency, with severe problems, see a doctor trained to recognize occupational shortness of breath. diseases. Take this Fact Sheet with you. * High exposure can cause dizziness, irritability, difficulty * ODOR THRESHOLD = 0.049 ppm. with concentration and reduced memory. * The range of accepted odor threshold values is quite * Methyl Methacrylate may cause a skin allergy. If allergy broad. Caution should be used in relying on odor alone as develops, very low future exposure can cause itching and a a warning of potentially hazardous exposures. skin rash. * Methyl Methacrylate may damage the nervous system WORKPLACE EXPOSURE LIMITS causing numbness, "pins and needles," and/or weakness in OSHA: The legal airborne permissible exposure limit the hands and feet. (PEL) is 100 ppm averaged over an 8-hour * Methyl Methacrylate may affect the liver and kidneys. workshift. * Methyl Methacrylate is a FLAMMABLE and REACTIVE chemical and a FIRE and EXPLOSION NIOSH: The recommended airborne exposure limit is HAZARD. 100 ppm averaged over a 10-hour workshift. IDENTIFICATION ACGIH: The recommended airborne exposure limit is Methyl Methacrylate is a colorless liquid with a sharp, fruity 50 ppm averaged over an 8-hour workshift and odor. It is used to make resins, plastics, and plastic dentures. 100 ppm as a STEL (short term exposure limit). REASON FOR CITATION WAYS OF REDUCING EXPOSURE * Methyl Methacrylate is on the Hazardous Substance List * Where possible, enclose operations and use local exhaust because it is regulated by OSHA and cited by ACGIH, ventilation at the site of chemical release. If local exhaust DOT, NIOSH, NFPA, DEP and EPA. ventilation or enclosure is not used, respirators should be * This chemical is on the Special Health Hazard Substance worn. List because it is FLAMMABLE and REACTIVE. * Wear protective work clothing. * Definitions are provided on page 5. * Wash thoroughly immediately after exposure to Methyl Methacrylate. HOW TO DETERMINE IF YOU ARE BEING * Post hazard and warning information in the work area. In addition, as part of an ongoing education and training EXPOSED effort, communicate all information on the health and The New Jersey Right to Know Act requires most employers safety hazards of Methyl Methacrylate to potentially to label chemicals in the workplace and requires public exposed workers. employers to provide their employees with information and training concerning chemical hazards and controls. The federal OSHA Hazard Communication Standard, 1910.1200, requires private employers to provide similar training and information to their employees. METHYL METHACRYLATE page 2 of 6 This Fact Sheet is a summary source of information of all Any evaluation should include a careful history of past and potential and most severe health hazards that may result from present symptoms with an exam. Medical tests that look for exposure. Duration of exposure, concentration of the substance damage already done are not a substitute for controlling and other factors will affect your susceptibility to any of the exposure. potential effects described below. --------------------------------------------------------------------------- Request copies of your medical testing. You have a legal right to this information under OSHA 1910.1020. HEALTH HAZARD INFORMATION Mixed Exposures Acute Health Effects * Because smoking can cause heart disease, as well as lung The following acute (short-term) health effects may occur cancer, emphysema, and other respiratory problems, it may immediately or shortly after exposure to Methyl worsen respiratory conditions caused by chemical exposure. Methacrylate: Even if you have smoked for a long time, stopping now will reduce your risk of developing health problems. * Contact can irritate the eyes, skin, nose and throat. * Because more than light alcohol consumption can cause * Breathing Methyl Methacrylate can irritate the lungs liver damage, drinking alcohol may increase the liver causing coughing and/or shortness of breath. Higher damage caused by Methyl Methacrylate. exposures can cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency, with severe WORKPLACE CONTROLS AND PRACTICES shortness of breath. * High exposure can cause dizziness, irritability, difficulty Unless a less toxic chemical can be substituted for a hazardous with concentration and reduced memory. substance, ENGINEERING CONTROLS are the most effective way of reducing exposure. The best protection is to Chronic Health Effects enclose operations and/or provide local exhaust ventilation at The following chronic (long-term) health effects can occur at the site of chemical release. Isolating operations can also some time after exposure to Methyl Methacrylate and can last reduce exposure. Using respirators or protective equipment is for months or years: less effective than the controls mentioned above, but is sometimes necessary. Cancer Hazard * There is limited evidence that Methyl Methacrylate causes In evaluating the controls present in your workplace, consider: mutations (genetic changes). (1) how hazardous the substance is, (2) how much of the substance is released into the workplace and (3) whether Reproductive Hazard harmful skin or eye contact could occur. Special controls * Methyl Methacrylate may damage the developing fetus. should be in place for highly toxic chemicals or when significant skin, eye, or breathing exposures are possible. Other Long-Term Effects * Methyl Methacrylate may cause a skin allergy. If allergy In addition, the following controls are recommended: develops, very low future exposure can cause itching and a skin rash. * Where possible, automatically pump liquid Methyl * Methyl Methacrylate may damage the nervous system Methacrylate from drums or other storage containers to causing numbness, "pins and needles," and/or weakness in process containers. the hands and feet. * Before entering a confined space where Methyl * Methyl Methacrylate may affect the liver and kidneys. Methacrylate may be present, check to make sure that an explosive concentration does not exist. MEDICAL Good WORK PRACTICES can help to reduce hazardous exposures. The following work practices are recommended: Medical Testing If symptoms develop or overexposure is suspected, the * Workers whose clothing has been contaminated by Methyl following are recommended: Methacrylate should change into clean clothing promptly. * Contaminated work clothes should be laundered by * Consider chest x-ray after acute overexposure. individuals who have been informed of the hazards of * Exam of the nervous system. exposure to Methyl Methacrylate. * Evaluation by a qualified allergist, including careful * Eye wash fountains should be provided in the immediate exposure history and special testing, may help diagnose work area for emergency use. skin allergy. * If there is the possibility of skin exposure, emergency * Liver and kidney function tests. shower facilities should be provided. METHYL METHACRYLATE page 3 of 6 * On skin contact with Methyl Methacrylate, immediately * If while wearing a filter or cartridge respirator you can wash or shower to remove the chemical. At the end of the smell, taste, or otherwise detect Methyl Methacrylate, or if workshift, wash any areas of the body that may have while wearing particulate filters abnormal resistance to contacted Methyl Methacrylate, whether or not known breathing is experienced, or eye irritation occurs while skin contact has occurred. wearing a full facepiece respirator, leave the area * Do not eat, smoke, or drink where Methyl Methacrylate is immediately. Check to make sure the respirator-to-face seal handled, processed, or stored, since the chemical can be is still good. If it is, replace the filter or cartridge. If the swallowed. Wash hands carefully before eating, drinking, seal is no longer good, you may need a new respirator. smoking, or using the toilet. * Be sure to consider all potential exposures in your workplace. You may need a combination of filters, PERSONAL PROTECTIVE EQUIPMENT prefilters or cartridges to protect against different forms of a chemical (such as vapor and mist) or against a mixture of WORKPLACE CONTROLS ARE BETTER THAN chemicals. PERSONAL PROTECTIVE EQUIPMENT. However, for * Where the potential for high exposure exists, use a NIOSH some jobs (such as outside work, confined space entry, jobs approved supplied-air respirator with a full facepiece done only once in a while, or jobs done while workplace operated in a pressure-demand or other positive-pressure controls are being installed), personal protective
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