METHACRYLONITRILE

International Chemical Safety Cards

METHACRYLONITRILE

ICSC: 0652

METHACRYLONITRILE
Methylacrylonitrile
2-Methyl-2-propenenitrile
2-Cyanopropene
Isopropenylnitrile
C₄H₅N
Molecular mass: 67.1
CAS # 126-98-7
RTECS # UD1400000
ICSC # 0652
UN # 3079 (Inhibited)
EC # 608-010-00-2

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking.	Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION	Vapour/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		STRICT HYGIENE!
INHALATION	Headache. Weakness. Nausea. Vomiting. Diarrhoea. Asphyxia.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
SKIN	MAY BE ABSORBED! (Further see Inhalation).	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
EYES	Redness. Pain.	Face shield, or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION	(Further see Inhalation).	Do not eat, drink, or smoke during work.	Give a slurry of activated charcoal in water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

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. Do NOT let this chemical enter the environment (extra personal protection: P2 filter respirator for harmful particles).

Fireproof. Separated from food and feedstuffs. Cool. Store only if stabilized.

Do not transport with food and feedstuffs.
F symbol
T symbol
R: 11-23/24/25-43
S: (1/2-)9-16-18-29-45
Note: D
UN Classification.
UN Hazard Class: 3
UN Subsidiary Risks: 6.1
UN Packing Group: I
Marine pollutant.

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0652

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

METHACRYLONITRILE

ICSC: 0652

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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 will polymerize violently due to heating with fire or explosion hazard. On combustion, forms toxic and corrosive fumes including cyanides and nitrogen oxides.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: 1 ppm; 2.7 mg/m³ (as TWA) (skin) (ACGIH 1994-1995).
MAK not established.

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 irritates the eyes and the respiratory tract. Exposure could cause cyanide poisoning.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis.

PHYSICAL
PROPERTIES

Boiling point: 90.3°C
Melting point: -35.8°C
Relative density (water = 1): 0.8
Solubility in water, g/100 ml at 20°C: moderate
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