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ETHYLENEIMINEICSC: 0100
July 2002
CAS #: 151-56-4Aziridine
Azacyclopropane
Dihydro-1H-azirine
UN #: 1185
EINECS #: 205-793-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Vapour/air mixtures are explosive. Risk of fire and explosion on contact with acids or oxidizing agents.  NO open flames, NO sparks and NO smoking. NO contact with acids.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.  Use water in large amounts, alcohol-resistant foam, powder. NO carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Dizziness. Headache. Laboured breathing. Nausea. Vomiting. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Skin burns. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Severe deep burns.  Wear 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 refer for medical attention. 
Ingestion Abdominal pain. Burning sensation. Vomiting. Shock or collapse. Further see Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Remove all ignition sources. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Subsidiary Risks: 3; UN Pack Group: I 

STORAGE
Fireproof. Separated from acids, oxidants and food and feedstuffs. Dry. Store only if stabilized. 
PACKAGING
Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs. 
ETHYLENEIMINE ICSC: 0100
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH PUNGENT ODOUR. 

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. The vapour mixes well with air, explosive mixtures are easily formed. 

Chemical dangers
The substance may polymerize under the influence of acids and oxidizing materials. This generates fire or explosion hazard. On combustion, forms toxic and corrosive fumes including nitrogen oxides. The substance is a medium strong base. 

Formula: C2H5N / CH2NHCH2
Molecular mass: 43.1
Boiling point: 56-57°C
Melting point: -74°C
Relative density (water = 1): 0.8
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 21.3
Relative vapour density (air = 1): 1.5
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: -11°C c.c.
Auto-ignition temperature: 322°C
Explosive limits, vol% in air: 3.3-55
Octanol/water partition coefficient as log Pow: -0.36  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema. See Notes. The substance may cause effects on the central nervous system, kidneys and liver. Exposure far above the OEL could cause death. The effects may be delayed. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. This substance is possibly carcinogenic to humans. May cause heritable genetic damage to human germ cells. 


Occupational exposure limits
TLV: 0.05 ppm as TWA; 0.1 ppm as STEL; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans).
MAK: skin absorption (H); carcinogen category: 2; germ cell mutagen group: 2 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
Depending on the degree of exposure, periodic medical examination is indicated.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.
Rest and medical observation are therefore essential.
The odour warning when the exposure limit value is exceeded is insufficient.
Ethyleneimine vapours are uninhibited and may form polymers in vents or flame arrestors causing stoppage of vents.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F, T+, N; R: 45-46-11-26/27/28-34-51/53; S: 53-45-61; Note: D, E 

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    See Also:
       Toxicological Abbreviations