Methacrylic acid
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CAS
79-41-4
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CH2=C(CH3)COOH
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RTECS
OZ2975000
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Synonyms & Trade Names
Methacrylic acid (glacial), Methacrylic acid (inhibited), alpha-Methacrylic acid, 2-Methylacrylic acid, 2-Methylpropenoic acid
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DOT ID & Guide
2531 / 153P (inhibited)
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Exposure
Limits
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NIOSH REL: TWA 20 ppm (70 mg/m3) [skin]
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OSHA PEL†: none
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IDLH
N.D.
See: IDLH INDEX
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Conversion
1 ppm = 3.52 mg/m3
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Physical Description
Colorless liquid or solid (below 61°F) with an acrid, repulsive odor.
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MW: 86.1
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BP: 325°F
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FRZ: 61°F
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Sol(77°F): 9%
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VP: 0.7 mmHg
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IP: ?
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Sp.Gr: 1.02 (Liquid)
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Fl.P(oc): 171°F
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UEL: ?
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LEL: ?
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Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
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Incompatibilities & Reactivities
Oxidizers, elevated temperatures, hydrochloric acid [Note: Typically contains 100 ppm of the monomethyl ether of hydroquinone to prevent polymerization.]
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Measurement Methods
OSHA PV2005
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 or contaminated
Change: Daily
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
Not available.
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, mucous membrane; eye, skin burns
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0917 |
