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MALONONITRILE ICSC: 1466
Date of Peer Review: May 2003

Propanedinitrile
Malonic acid dinitrile
Cyanoacetonitrile
Methylene dinitrile
CAS # 109-77-3 C3H2N2 / NCCH2CN
RTECS # OO3150000 Molecular mass: 66.1
UN # 2647
EC # 608-009-00-7
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames.
Water spray, dry powder, foam, carbon dioxide.
EXPLOSION Risk of fire and explosion: See Chemical Dangers.


EXPOSURE
STRICT HYGIENE!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Dizziness. Laboured breathing. Nausea. Vomiting. Weakness. Confusion. Convulsions. Unconsciousness.
Local exhaust or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. Half-upright position.
Skin MAY BE ABSORBED! Redness. Pain.
Protective clothing. Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes Redness. Pain.
Safety goggles, 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 Abdominal pain. (Further see Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Give a slurry of activated charcoal in water to drink. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Remove all ignition sources. Vacuum spilled material or sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. (Extra personal protection: chemical protection suit including self-contained breathing apparatus.)
Do not transport with food and feedstuffs.
EU Classification
Symbol: T, N
R: 23/24/25-50/53
S: (1/2-)-23-27-45-60-61
UN Classification
UN Hazard Class: 6.1
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT2-II
Cool. Separated from strong bases, food and feedstuffs. Well closed. Keep in a well-ventilated room.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

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MALONONITRILE ICSC: 1466
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS OR WHITE POWDER

CHEMICAL DANGERS:
The substance will polymerize under the influence of temperatures above 130C or under the influence of base(s) with fire or explosion hazard. The substance decomposes on heating producing toxic and corrosive gases, including hydrogen cyanide and nitrogen oxides. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is severely irritating to the eyes, the skin and the respiratory tract. The substance may cause effects on the cellular respiration (inhibition), resulting in convulsions, cardiac disorders and respiratory failure. Exposure at high levels may result in death. Medical observation is indicated. The effects may be delayed.

PHYSICAL PROPERTIES
Boiling point: 218-220C
Melting point: 30-34C
Density: 1.19 g/cm^3
Solubility in water, g/100 ml at 20C: 13.3 moderate
Vapour pressure, Pa at 25C: 27
Relative vapour density (air = 1): 2.3
Flash point: 112C o.c.
Octanol/water partition coefficient as log Pow: -0.6
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999