International Chemical Safety Cards PROPYLENEIMINE ICSC: 0322 2-Methylaziridine Methylethylenimine Propylene imine C3H7N Molecular mass: 57.1 ICSC #    0322 CAS #     75-55-8 RTECS # CM8050000 UN #        1921 (inhibited) EC #         613-033-00-6 March 13, 1995 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Extremely 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 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Cough. Dullness. Laboured breathing. Nausea. Shortness of breath. Sore throat. Vomiting. Ventilation. Local exhaust or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Skin burns (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. Blurred vision. Severe deep burns. 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 Vomiting (further see Inhalation). Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Use water spray to disperse vapours. Do NOT wash away into sewer. Wash away remainder with plenty of water (extra personal protection: complete protective clothing including self-contained breathing apparatus). Fireproof. Separated from acids. Cool. Dry. Airtight. Unbreakable packaging; put breakable packaging into closed unbreakable container. Note: E F symbol T+ symbol R: 45-11-26/27/28-41 S: 53-45 UN Hazard Class: 3 UN Packing Group: I SEE IMPORTANT INFORMATION ON BACK ICSC: 0322 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards PROPYLENEIMINE ICSC: 0322 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS, OILY, FUMING LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour is heavier than air and may travel along the ground; distant ignition possible. CHEMICAL DANGERS: The substance can polymerize under the influence of acids, with fire or explosion hazard. May explode on heating. The substance decomposes on heating and on burning producing toxic fumes including nitrogen oxides. OCCUPATIONAL EXPOSURE LIMITS: TLV: 2 ppm; 4.7 mg/m3 (as TWA), A2 (skin) (ACGIH 1994-1995). OSHA PEL: TWA 2 ppm (5 mg/m3) skin NIOSH REL: Ca TWA 2 ppm (5 mg/m3) skin See Appendix A NIOSH IDLH: Potential occupational carcinogen 100 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and 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 irritates the eyes, the skin and the respiratory tract. Exposure far above the OEL may result in death. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. This substance is possibly carcinogenic to humans. PHYSICAL PROPERTIES 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 Flash point: -4°C c.c. ENVIRONMENTAL DATA N O T E S Explosive limits are unknown in literature. An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Transport Emergency Card: TEC (R)-735 ADDITIONAL INFORMATION ICSC: 0322 PROPYLENEIMINE (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.