International Chemical Safety Cards PROPYLENE GLYCOL DINITRATE ICSC: 1392 1,2-Propanediol dinitrate PGDN C3H6N2O6 / CH3CHONO2CH2ONO2 Molecular mass: 166.09 ICSC #    1392 CAS #     6423-43-4 RTECS # TY6300000 October 17, 2001 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Explosive. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames, NO sparks, and NO smoking. Powder, water spray, foam, carbon dioxide. EXPLOSION Risk of fire and explosion. Do NOT expose to friction or shock. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. EXPOSURE STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Blue lips or finger nails. Blue skin. Confusion. Convulsions. Dizziness. Headache. Nausea. Unconsciousness. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.  •SKIN MAY BE ABSORBED! (See Inhalation). Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. 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 (See Inhalation). Do not eat, drink, or smoke during work. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Remove all ignition sources. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Personal protection: complete protective clothing including self-contained breathing apparatus. Fireproof. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1392 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 PROPYLENE GLYCOL DINITRATE ICSC: 1392 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: Heating may cause violent combustion or explosion. May explosively decompose on shock, friction, or concussion. On combustion, forms toxic and corrosive gases. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.05 ppm as TWA; (skin); BEI issued; (ACGIH 2004). MAK: 0.05 ppm, 0.3 mg/m³; skin absorption (H); Peak limitation category: II(1); (DFG 2004). 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 rather quickly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is mildly irritating to the eyes . The substance may cause effects on the blood , resulting in the formation of methaemoglobin. Medical observation is indicated. See Notes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Decomposes below boiling point at 121°C Relative density (water = 1): 1.2 at 25°C Solubility in water, g/100 ml: 0.1 Vapour pressure, Pa at 22.5°C: 9.3 Relative vapour density (air = 1): 5.73 Relative density of the vapour/air-mixture at 20°C (air = 1): 1 ENVIRONMENTAL DATA N O T E S Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT take working clothes home. Card has been partly updated in April 2005. See section Occupational Exposure Limits. ADDITIONAL INFORMATION ICSC: 1392 PROPYLENE GLYCOL DINITRATE (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.