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Methylacrylonitrile

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Synonyms & Trade Names
2-Cyanopropene-1, 2-Cyano-1-propene, Isoprene cyanide, Isopropenylnitrile, Methacrylonitrile, α-Methylacrylonitrile, 2-Methylpropenenitrile
CAS No.
126-98-7
RTECS No.
UD1400000
DOT ID & Guide
3079 131P(inhibited)
Formula
CH₂=C(CH₃)CN
Conversion
1 ppm = 2.74 mg/m³
IDLH
4 ppm
See: 2017-204
Exposure Limits
NIOSH REL
TWA 1 ppm (3 mg/m³) [skin]
OSHA PEL
none See Appendix G
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with an odor like bitter almonds.
Molecular Weight
67.1
Boiling Point
195°F
Freezing Point
-32°F
Solubility
3%
Vapor Pressure
(77°F): 71 mmHg
Ionization Potential
?
Specific Gravity
0.80
Flash Point
34°F
Upper Explosive Limit
6.8%
Lower Explosive Limit
2%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Strong acids, strong oxidizers, alkali, light [Note: Polymerization may occur due to elevated temperature, visible light, or contact with a concentrated alkali.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin; lacrimation (discharge of tears); In Animals: convulsions, loss of motor control in hind limbs
Target Organs
Eyes, skin, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet (flammable)
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0652
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health