International Chemical Safety Cards 2,3-EPOXY-1-PROPANOL ICSC: 0159 Glycidol Oxirane methanol 3-Hydroxypropylene oxide C3H6O2 Molecular mass: 74.1 ICSC #    0159 CAS #     556-52-5 RTECS # UB4375000 UN #        2810 EC #         603-063-00-8 April 22, 1994 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. NO contact with incompatible materials (see Chemical Dangers). Powder, alcohol-resistant foam, water spray, carbon dioxide. EXPLOSION Above 72°C explosive vapour/air mixtures may be formed. Risk of fire and explosion with incompatible materials (see Chemical Dangers). Above 72°C use a closed system, ventilation. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE AVOID ALL CONTACT!  •INHALATION Cough. Dizziness. Laboured breathing. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Face shield. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Abdominal pain. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking and spilled liquid in sealable glass or mild steel containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent and remove to safe place. (Extra personal protection: complete protective clothing including self-contained breathing apparatus). Separated from strong bases, strong acids, food and feedstuffs. Cool. Dry. Well closed. Ventilation along the floor. Do not transport with food and feedstuffs. T symbol R: 21/22-23-36/37/38-42/43 S: 1/2-45 UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0159 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 2,3-EPOXY-1-PROPANOL ICSC: 0159 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS, SLIGHTLY VISCOUS LIQUID. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on contact with strong acids and bases, water, salts (aluminium chloride, ferric chloride) or metals (copper, zinc) , causing fire and explosion hazard. Attacks plastic and rubber. OCCUPATIONAL EXPOSURE LIMITS: TLV: 25 ppm; 76 mg/m3 (ACGIH 1993-1994). OSHA PEL: TWA 50 ppm (150 mg/m3) NIOSH REL: TWA 25 ppm (75 mg/m3) NIOSH IDLH: 150 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, 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 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes, the skin and the respiratory tract. Inhalation of vapour may cause lung oedema (see Notes). The substance may cause effects on the central nervous system. Exposure far above OEL could cause lowering of consciousness. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. This substance is possibly carcinogenic to humans. Animal tests show that this substance possibly causes toxic effects upon human reproduction. PHYSICAL PROPERTIES Boiling point (decomposes): 166°C Melting point: -45°C Relative density (water = 1): 1.1 Solubility in water: miscible Vapour pressure, Pa at 25°C: 120 Relative vapour density (air = 1): 2.15 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0 Flash point: 72°C c.c. Auto-ignition temperature: 415°C ENVIRONMENTAL DATA N O T E S 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. No odour warning if toxic concentrations are present. Transport Emergency Card: TEC (R)-726 ADDITIONAL INFORMATION ICSC: 0159 2,3-EPOXY-1-PROPANOL (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.