| Agent Name |
Methylacrylonitrile |
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| Alternative Name |
Methacrylonitrile |
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| CAS Number |
126-98-7 |
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| Formula |
C4-H5-N |
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| Major Category |
Toxic Gases & Vapors |
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| Synonyms |
2-Cyanopropene-1; 2-Methyl-2-propenenitrile; 2-Methylacrylonitrile; 2-Methylpropenenitrile; 2-Propenenitrile, 2-methyl-; Isopropene cyanide; Isopropenylnitrile; Methylacrylonitrile; [ChemIDplus] UN3079 |
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| Category |
Nitriles |
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| Description |
Colorless liquid with an odor like bitter almonds; [NIOSH] |
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| Sources/Uses |
Used in synthesis of plastic elastomers, coatings, and other organic chemicals; [ACGIH] |
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| Comments |
Methylacrylonitrile is a potent convulsant in animals. Seizures in exposed workers have been reported. [ACGIH] An eye and respiratory tract irritant; Can cause cyanide poisoning; [ICSC] A skin sensitizer; [Quick CPC] A lachrymator; [HSDB] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
Yes |
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| TIH |
Yes |
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| TLV (ACGIH) |
1 ppm |
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| Excerpts from Documentation for IDLHs |
Acute inhalation toxicity is similar to acrylonitrile; [ACGIH] |
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| Vapor Pressure |
71 mm Hg |
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| Odor Threshold Low |
6.9 ppm |
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| Lethal Concentration |
LC50 (rats) = 328 ppm/4h |
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| Explanatory Notes |
Detection odor threshold from AIHA (mean = 6.9 ppm); Flash point = 13 deg C; |
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| Flammability (NFPA) |
3: may ignite at ambient temperature |
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| Adverse Effects |
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| Skin Sensitizer |
Yes |
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| Lacrimator |
Yes |
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| Other Poison |
Chemical Asphyxiant |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: METHYLACRYLONITRILE
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