IPCS INCHEM Home
PROPYLENEIMINE
ICSC: 0322
Peer-Review Status: 04.05.2010 Validated
2-Methylaziridine
Methylethylenimine 
CAS #: 75-55-8 UN #: 1921 (inhibited)
EC #: 613-033-00-6
EINECS #: 200-878-7
    Formula: C3H7N
Molecular mass: 57.1

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. NO contact with acids.  Use water spray, alcohol-resistant foam, dry powder. NO carbon dioxide. 
EXPLOSION Vapour/air mixtures are explosive. Risk of fire and explosion on contact with acids or oxidants.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE   AVOID ALL CONTACT!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Cough. Sore throat. Burning sensation. Shortness of breath. Laboured breathing. Nausea. Vomiting. Dizziness. Headache. Symptoms may be delayed.  Use closed system.  Fresh air, rest. Half-upright position. Refer immediately for medical attention. 
Skin MAY BE ABSORBED! Redness. Further see Inhalation.  Protective gloves. Protective clothing.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention . 
Eyes Redness. Pain. Blurred vision.  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 Sore throat. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Airtight.
Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs. 
EC Classification
Symbol: F, T+, N; R: 45-11-26/27/28-41-51/53; S: 53-45-61; Note: E 
UN Classification
UN Hazard Class: 3; UN Subsidiary Risks: 6.1; UN Pack Group: I 
GHS Classification
Signal: Danger
Highly flammable liquid and vapour
Fatal if swallowed, in contact with skin or if inhaled
Causes skin irritation
Causes serious eye irritation
May cause cancer 
flam;flameskull;toxiccancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
  Fireproof. Separated from acids, oxidants and food and feedstuffs. Cool. Ventilation along the floor. Store only in original container. Store only if stabilized. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS OILY FUMING LIQUID WITH PUNGENT ODOUR. 

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. 

Chemical dangers
The substance may polymerize under the influence of acids. This generates fire or explosion hazard. Decomposes on heating. This produces toxic fumes including nitrogen oxides. Attacks some forms of plastic, coatings and rubber. 

Occupational exposure limits
TLV: 0.2 ppm as TWA; 0.4 ppm as STEL; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2010).
MAK: Carcinogen category: 2; Germ cell mutagen group: 3B; Skin absorption (H); (DFG 2009). 

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 can be reached very quickly on evaporation of this substance at 20°C. 

Effects of short-term exposure
The substance is severely irritating to the eyes, skin and respiratory tract. Inhalation may cause lung oedema. See Notes. Exposure far above the OEL could cause death. 

Effects of long-term or repeated exposure
This substance is possibly carcinogenic to humans. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 67°C
Melting point: -63°C
Relative density (water = 1): 0.8
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 14.9
Relative vapour density (air = 1): 2.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.21
Flash point: -18°C c.c.
Octanol/water partition coefficient as log Pow: 0.13
Viscosity: 0.6 mm²/s at 25°C 
 

NOTES
Explosive limits are unknown in literature, although the substance is combustible and has a flash point < 61°C.
Reacts violently with fire extinguishing agents such as carbon dioxide.
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.
Data on similar substances suggest the possibility of environmental effects.
An added stabilizer or inhibitor can influence the toxicological properties of this substance; consult an expert.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations