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METHYL ACRYLONITRILE
| CAS # | 126-98-7 |
|---|---|
| Formula |
C₄H₅N |
| Synonyms |
2-cyanopropene-1, 2-cyano-1-propene; isoprene cyanide; isopropenylnitrile; methacrylonitrile; à-methylacrylonitrile; 2-methylpropenenitrile |
| 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 | |||
| Analyte code (IMIS no.) | |
|---|---|
| Sampling group | |
| Sampler/Sampling media | |
| Sampling time* |
|
| Sampling volume (TWA)* |
|
| Sampling flow rate (TWA)* |
|
| Sampling volume (STEL/Peak/C)* |
|
| Sampling flow rate (STEL/Peak/C)* |
|
| Analytical method instruments | |
| Method reference | |
| Notes |
|
| Special requirements |
|
* 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 Sampler/Sampling media |
|
|---|---|
| Bulk Method |
|
| 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 |
|
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 |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
|
REL-TWA |
1 ppm (3 mg/m³) |
TLV-TWA |
1 ppm [2010] |
PEL-TWA |
1 ppm (3 mg/m³) |
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
|
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
NA |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
|
Notes:
Not established |
Notes:
|
Notes:
|
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
|
NOAA: CAMEO Chemicals - Methacrylonitrile, stabilized NIOSH: Pocket Guide to Chemical Hazards - Methylacrylonitrile Literature References
|
Last Updated Date : 01/28/2021