International Chemical Safety Cards n-BUTYL ETHER ICSC: 1150 Di-n-butyl ether 1,1'-Oxybis(butane) 1-Butoxybutane C8H18O / (CH3(CH2)3)O Molecular mass: 130.2 ICSC #    1150 CAS #     142-96-1 RTECS # EK5425000 UN #        1149 EC #         603-054-00-9 April 22, 1994 Peer reviewe TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Flammable. NO open flames, NO sparks, and NO smoking. NO contact with hot surfaces. AFFF, alcohol-resistant foam, powder, carbon dioxide. EXPLOSION Above 25°C explosive vapour/air mixtures may be formed. Above 25°C use a closed system, ventilation, and explosion-proof electrical equipment. Prevent build-up of electrostatic charges (e.g., by grounding). In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE PREVENT GENERATION OF MISTS!  •INHALATION Cough. Drowsiness. Sore throat. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN Dry skin. Redness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Safety spectacles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Burning sensation. Nausea. Sore throat. Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Personal protection: filter respirator for organic gases and vapours. Fireproof. Separated from incompatible materials : see Chemical Dangers. Cool. Keep in the dark. Store only if stabilized. Airtight. Xi symbol R: 10-36/37/38-52/53 S: 2-61 UN Hazard Class: 3 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1150 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-BUTYL ETHER ICSC: 1150 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID. PHYSICAL DANGERS: As a result of flow, agitation, etc., electrostatic charges can be generated. CHEMICAL DANGERS: The substance can form explosive peroxides, especially in anhydrous form. Reacts with oxidants. Reacts violently with nitrogen trichloride (NCl3). OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour. 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 , the skin and the respiratory tract . The substance may cause effects on the central nervous system and liver . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The liquid defats the skin. PHYSICAL PROPERTIES Boiling point: 142°C Melting point: -95°C Relative density (water = 1): 0.8 Solubility in water: none (<0.1 g/100 ml) Vapour pressure, kPa at 20°C: 0.64 Relative vapour density (air = 1): 4.5 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0 Flash point: 25°C Auto-ignition temperature: 194°C Explosive limits, vol% in air: 1.5-7.6 Octanol/water partition coefficient as log Pow: 3.08 (calc) ENVIRONMENTAL DATA This substance may be hazardous to the environment; special attention should be given to aquatic organisms. N O T E S An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Check for peroxides prior to distillation; eliminate if found. Card has been partly updated in April 2005. See sections EU classification, Emergency Response. Transport Emergency Card: TEC (R)-30S1149 or 30GF1-III NFPA Code: H 2; F 3; R 0; ADDITIONAL INFORMATION ICSC: 1150 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.