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| Methyl methacrylate | CAS 80-62-6 | ||
| CH2=C(CH3)COOCH3 | RTECS OZ5075000 | ||
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Synonyms & Trade Names Methacrylate monomer, Methyl ester of methacrylic acid, Methyl-2-methyl-2-propenoate |
DOT ID & Guide 1247 129P (inhibited) |
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Exposure Limits |
NIOSH REL: TWA 100 ppm (410 mg/m3) | ||
| OSHA PEL: TWA 100 ppm (410 mg/m3) | |||
| IDLH 1000 ppm | Conversion 1 ppm = 4.09 mg/m3 | ||
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Physical Description Colorless liquid with an acrid, fruity odor. |
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MW: 100.1 |
BP: 214°F |
FRZ: -54°F |
Sol: 1.5% |
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VP: 29 mmHg |
IP: 9.70 eV |
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Sp.Gr: 0.94 |
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Fl.P(oc): 50°F |
UEL: 8.2% |
LEL: 1.7% |
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| Class IB Flammable Liquid: Fl.P. below 73�F and BP at or above 100�F. | |||
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Incompatibilities & Reactivities Nitrates, oxidizers, peroxides, strong alkalis, moisture [Note: May polymerize if subjected to heat, oxidizers, or ultraviolet light. Usually contains an inhibitor such as hydroquinone.] |
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Measurement Methods NIOSH 2537; OSHA 94 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH/OSHA Up to 1000 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode�/(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)�/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, nose, throat; dermatitis | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION |