Methylacrylonitrile
2-Methyl-2-propenenitrile
2-Cyanopropene
Isopropenylnitrile
C4H5N
Molecular mass: 67.1
ICSC # 0652
CAS # 126-98-7
RTECS # UD1400000
UN # 3079 (stabilised)
EC # 608-010-00-2
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Highly flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
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Alcohol-resistant foam.
Dry powder.
Carbon dioxide.
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Explosion
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Vapour/air mixtures are explosive.
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Closed system, ventilation, explosion-proof electrical equipment and lighting.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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STRICT HYGIENE!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Headache.
Confusion.
Weakness.
Shortness of breath.
Convulsions.
Unconsciousness.
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Local exhaust or breathing protection.
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Fresh air, rest.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
(Further see Inhalation).
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
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Face shield
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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(See Inhalation).
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Do not eat, drink, or smoke during work.
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Give a slurry of activated charcoal in water to drink.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Wear protective gloves when inducing vomiting.
No mouth-to-mouth artificial respiration. Administer oxygen by trained personnel.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Evacuate danger area!
Remove all ignition sources.
Personal protection:
chemical protection suit including self-contained breathing apparatus.
Collect leaking and spilled liquid in sealable containers as far as possible.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
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Store only if stabilized.
Fireproof.
Cool.
Keep in the dark.
Separated from
food and feedstuffs
.
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Do not transport with food and feedstuffs.
Note: D
F symbol
T symbol
R: 11-23/24/25-43
S: 1/2-9-16-18-29-45
UN Hazard Class: 3
UN Subsidiary Risks: 6.1
UN Packing Group: I
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Important Data
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Physical State; Appearance:
COLOURLESS
LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
The vapour is heavier than air
and may travel along the ground; distant ignition possible.
Vapours are uninhibited and may polymerize, blocking vents.
Chemical Dangers:
The substance may polymerize
violently
under the influence of
acid(s)
,
base(s)
,
light
,
with fire or explosion hazard.
The substance may polymerize
due to heating
with fire or explosion hazard.
On combustion, forms toxic and corrosive fumes including cyanidesandnitrogen oxides.
Occupational Exposure Limits:
TLV: 1 ppm as TWA; (skin); (ACGIH 2005).
MAK not established.
OSHA PEL: none
NIOSH REL: TWA 1 ppm (3 mg/m3) skin
NIOSH IDLH: N.D. See: IDLH INDEX
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour,
through the skin
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The vapour
is irritating to
the eyes
and
the respiratory tract
.
The substance may cause effects on the cellular respiration
, resulting in
convulsions
and
unconsciousness
.
Exposure may result in death.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 90.3°C
Melting point: -35.8°C
Relative density (water = 1): 0.8
Solubility in water:
at 20°C
moderate
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Vapour pressure, kPa at 25°C: 8.66
Relative vapour density (air = 1): 2.3
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.17
Flash point: 1.1°C c.c.
Explosive limits, vol% in air: 2-6.8
Octanol/water partition coefficient as log Pow: 0.68
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Environmental
Data
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N O T E S
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The commercial product contains 50 ppm hydroquinone monoethyl ether as a stabilizer.
The odour warning when the exposure limit value is exceeded is insufficient.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Use same antidotes as in the case of cyanide poisoning.
Transport Emergency Card: TEC (R)-30GTF1-I
NFPA Code: H4; F3; R2
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ADDITIONAL INFORMATION
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ICSC: 0652
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METHACRYLONITRILE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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