International Chemical Safety Cards PROPYLENE GLYCOL n-BUTYL ETHER ICSC: 1614 1-Butoxy-2-propanol n-Butoxypropanol C7H16O2 / CH3CH(OH)CH2O(CH2)3CH3 Molecular mass: 132.23 ICSC #    1614 CAS #     5131-66-8 RTECS # UA7700000 EC #         603-052-00-8 October 20, 2005 Validated TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Water spray, foam, powder, carbon dioxide. EXPLOSION Above 63°C explosive vapour/air mixtures may be formed. Above 63°C use a closed system, ventilation, and explosion-proof electrical equipment. EXPOSURE  •INHALATION Ventilation. Fresh air, rest.  •SKIN Redness. Pain. Protective gloves. Rinse skin with plenty of water or shower.  •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 Do not eat, drink, or smoke during work. Rinse mouth. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Then wash away with plenty of water. Keep in the dark. Separated from strong oxidants. Xi symbol R: 36/38 S: (2) SEE IMPORTANT INFORMATION ON BACK ICSC: 1614 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 n-BUTYL ETHER ICSC: 1614 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: CLEAR COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance can presumably form explosive peroxides. Reacts with strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body through the skin, and by ingestion. INHALATION RISK: No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes and the skin . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 171°C Melting point: below -75°C Relative density (water = 1): 0.879 at 25°C Solubility in water, g/100 ml : 6 (moderate) Vapour pressure, kPa at 25°C: 0.187 Relative vapour density (air = 1): 4.55 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.007 Flash point: 63 °C c.c. Auto-ignition temperature: 260°C Explosive limits, vol% in air: 1.1 at 80 °C. - 8.4 at 145 °C Octanol/water partition coefficient as log Pow: 1.15 (calculated) Viscosity, mm2/s at 25 °C: 2.9 ENVIRONMENTAL DATA N O T E S Check for peroxides prior to distillation; eliminate if found. Card has been partially updated in : see Physical Properties. ADDITIONAL INFORMATION ICSC: 1614 PROPYLENE GLYCOL n-BUTYL ETHER (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.