METHYL ACRYLONITRILE
| Chemical Identification | |
|---|---|
| CAS # | 126-98-7 |
| Formula |
C₄H₅N |
| Synonyms |
2-cyanopropene-1, 2-cyano-1-propene; isoprene cyanide; isopropenylnitrile; methacrylonitrile; à-methylacrylonitrile; 2-methylpropenenitrile |
| Physical Properties | |||
|---|---|---|---|
| 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 | |
|---|---|
| Sampler/Sampling media |
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| Bulk Method |
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| On-Site Screening Techniques | ||||||
|---|---|---|---|---|---|---|
| Device | Detector tube | Detector tube | ||||
| Model/Type | Dräger 6730301 | Gastec 192 | ||||
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Sampling information (see manufacturer instructions) |
1-10 ppm range | 0.2-32.0 ppm range | ||||
| Exposure Limits | |||||||
|---|---|---|---|---|---|---|---|
|
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 |
|
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 |
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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