METHYL ACRYLONITRILE
Chemical Identification | |
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CAS # | 126-98-7 |
Formula |
C₄H₅N |
Synonyms |
2-cyanopropene-1, 2-cyano-1-propene; isoprene cyanide; isopropenylnitrile; methacrylonitrile; à-methylacrylonitrile; 2-methylpropenenitrile |
Physical Properties | |||
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Physical description | Colorless liquid with an odor like bitter almonds. | ||
Boiling point | 195°F | Molecular weight | 67.1 |
Freezing point/melting point | -32.4°F | Vapor pressure | 71 mmHg at 77°F |
Flash point | 55°F | Vapor density | 2.31 |
Specific gravity | 0.8001 | Ionization potential | |
Lower explosive limit (LEL) | 2% | Upper explosive limit (UEL) | 6.8% |
NFPA health rating | 4 | NFPA fire rating | 3 |
NFPA reactivity rating | 2 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
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Analyte code (IMIS no.) | ||||||
Sampling group | ||||||
Sampler/Sampling media | ||||||
Sampling time* |
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Sampling volume (TWA)* |
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Sampling flow rate (TWA)* |
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Sampling volume (STEL/Peak/C)* |
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Sampling flow rate (STEL/Peak/C)* |
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Analytical method instruments | ||||||
Method reference | ||||||
Notes |
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Special requirements |
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* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
Wipe Method | |
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Sampler/Sampling media |
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Bulk Method |
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On-Site Screening Techniques | ||||||
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Device | Detector tube | Detector tube | ||||
Model/Type | Dräger 6730301 | Gastec 192 | ||||
Sampling information (see manufacturer instructions) |
1-10 ppm range | 0.2-32.0 ppm range |
Exposure Limits | |||||||
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OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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PEL-TWA |
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REL-TWA |
1 ppm (3 mg/m³) |
TLV-TWA |
1 ppm [2010] |
PEL-TWA |
1 ppm (3 mg/m³) |
PEL-STEL |
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REL-STEL |
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TLV-STEL |
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PEL-STEL |
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PEL-C |
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REL-C |
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TLV-C |
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PEL-C |
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Skin notation |
NA |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
Notes:
Not established |
Notes:
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Notes:
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Notes:
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Health factors: See NIH-NLM PubChem. | IDLH | ||||||
Carcinogenic classifications: TLV-A4 |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References |
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NOAA: CAMEO Chemicals - Methacrylonitrile, stabilized NIOSH: Pocket Guide to Chemical Hazards - Methylacrylonitrile Literature References
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Last Updated Date : 01/28/2021