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MALONONITRILEICSC: 1466
July 2003
CAS #: 109-77-3Propanedinitrile
Malonic acid dinitrile
Cyanoacetonitrile
Methylene dinitrile
UN #: 2647
EINECS #: 203-703-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  Risk of fire and explosion. See Chemical Dangers.  NO open flames.    Use water spray, dry powder, foam, carbon dioxide.   

 STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Dizziness. Laboured breathing. Nausea. Vomiting. Weakness. Confusion. Convulsions. Unconsciousness.  Use 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.  Wear 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 refer for medical attention. 
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 one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Remove all ignition sources. Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Vacuum spilled material with specialist equipment. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 

STORAGE
Cool. Separated from strong bases and food and feedstuffs. Well closed. Keep in a well-ventilated room. 
PACKAGING
Do not transport with food and feedstuffs. 
MALONONITRILE ICSC: 1466
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS CRYSTALS OR WHITE POWDER. 

Physical dangers
 

Chemical dangers
The substance polymerizes under the influence of temperatures above 130°C or under the influence of bases. This generates fire or explosion hazard. Decomposes on heating. This produces toxic and corrosive gases including hydrogen cyanide and nitrogen oxides. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Formula: C3H2N2 / NCCH2CN
Molecular mass: 66.1
Boiling point: 218-220°C
Melting point: 30-34°C
Density: 1.19 g/cm³
Solubility in water, g/100ml at 20°C: 13.3 (moderate)
Vapour pressure, Pa at 25°C: 27
Relative vapour density (air = 1): 2.3
Flash point: 112°C o.c.
Octanol/water partition coefficient as log Pow: -0.6  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Effects of short-term exposure
The substance is severely irritating to the eyes, skin and respiratory tract. The substance may cause effects on the cellular respiration (inhibition). This may result in convulsions, cardiac disorders and respiratory failure. Exposure at high levels could cause death. Medical observation is indicated. The effects may be delayed. 

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
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
  EC Classification
Symbol: T, N; R: 23/24/25-50/53; S: (1/2)-23-27-45-60-61 

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    See Also:
       Toxicological Abbreviations