International Chemical Safety Cards n-PROPYL NITRATE ICSC: 1513 Nitric acid, propyl ester Monopropyl nitrate C3H7NO3 Molecular mass: 105.1 ICSC #    1513 CAS #     627-13-4 RTECS # UK0350000 UN #        1865 April 22, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Highly flammable. Explosive. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames, NO sparks, and NO smoking. NO contact with oxidants,combustibles,reducing agents. Powder, alcohol-resistant foam, water spray, carbon dioxide. EXPLOSION Vapour/air mixtures are explosive. Risk of fire and explosionon contact withcombustible substances. Do NOT expose to friction or shock. Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. EXPOSURE  •INHALATION Blue lips or finger nails. Blue skin. Dizziness. Headache. Nausea. Confusion. Convulsions. Unconsciousness. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. See Notes.  •SKIN Redness. Protective gloves. Rinse and then wash skin with water and soap.  •EYES Redness. Pain. Safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Abdominal pain. (Further see Inhalation). Do not eat, drink, or smoke during work. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Ventilation. Remove all ignition sources. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Personal protection: self-contained breathing apparatus. Well closed. Cool. Fireproof. Separated from strong oxidants, combustible and reducing substances. R: S: UN Hazard Class: 3 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 1513 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 n-PROPYL NITRATE ICSC: 1513 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS TO YELLOW LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour is heavier than air and may travel along the ground; distant ignition possible. CHEMICAL DANGERS: Heating may cause violent combustion or explosion. May decompose explosively on shock, friction, or concussion. The substance decomposes on burning producing nitrogen oxides . The substance is a strong oxidant and reacts violently with combustible and reducing materials. Reacts violently with strong oxidants. OCCUPATIONAL EXPOSURE LIMITS: TLV: 25 ppm as TWA; 40 ppm as STEL; BEI issued; (ACGIH 2004). MAK: 25 ppm, 110 mg/m³; Peak limitation category: II(2); (DFG 2003). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour and by ingestion. INHALATION RISK: A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the respiratory tract , the eyes and the skin . Inhalation of high concentrations of the substance may cause effects on the blood , resulting in the formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. See Notes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 110°C Relative density (water = 1): 1.05 Solubility in water: poor Vapour pressure, kPa at 20°C: 2.4 Relative vapour density (air = 1): 3.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.06 Flash point: 20°C c.c. Auto-ignition temperature: 175°C Explosive limits, vol% in air: 2-100 ENVIRONMENTAL DATA N O T E S Combustion in a confined space may turn into detonation. 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. NFPA Code: H2; F3; R3; OX Transport Emergency Card: TEC (R)-30GF1-I+II ADDITIONAL INFORMATION ICSC: 1513 n-PROPYL NITRATE (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.