Methyl methacrylate
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CAS
80-62-6
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CH2=C(CH3)COOCH3
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RTECS
OZ5075000
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Synonyms & Trade Names
Methacrylate monomer, Methyl ester of methacrylic acid, Methyl-2-methyl-2-propenoate
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DOT ID & Guide
1247 / 129P (inhibited)
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Exposure
Limits
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NIOSH REL: TWA 100 ppm (410 mg/m3)
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OSHA PEL: TWA 100 ppm (410 mg/m3)
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IDLH
1000 ppm
See: 80626
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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
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BP: 214°F
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FRZ: -54°F
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Sol: 1.5%
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VP: 29 mmHg
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IP: 9.70 eV
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Sp.Gr: 0.94
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Fl.P(oc): 50°F
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UEL: 8.2%
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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
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
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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
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat; dermatitis
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0300 |
