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Methacrylic acid |
CAS 79-41-4 | ||
CH2=C(CH3)COOH |
RTECS OZ2975000 | ||
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Synonyms & Trade Names Methacrylic acid (glacial), Methacrylic acid (inhibited), alpha-Methacrylic acid, 2-Methylacrylic acid, 2-Methylpropenoic acid |
DOT ID & Guide 2531 153P (inhibited) |
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Exposure
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NIOSH REL: TWA 20 ppm (70 mg/m3) [skin] | ||
| OSHA PEL†: none | |||
| IDLH N.D. See: IDLH INDEX | 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 |
BP: 325°F |
FRZ: 61°F |
Sol(77°F): 9% |
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VP: 0.7 mmHg |
IP: ? |
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Sp.Gr: 1.02 (Liquid) |
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Fl.P(oc): 171°F |
UEL: ? |
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 |
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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 |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection Respirator Recommendations Not available. |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| 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 |