International Chemical Safety Cards 2-ETHYLHEXANOIC ACID ICSC: 0477 2-Ethylcaproic acid 3-Heptanecarboxylic acid C8H16O2 / CH3(CH2)3CH(C2H5)COOH Molecular mass: 144.2 ICSC #    0477 CAS #     149-57-5 RTECS # MO7700000 EC #         607-230-00-6 April 21, 2005 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, water spray, foam, carbon dioxide. EXPLOSION EXPOSURE AVOID ALL CONTACT!  •INHALATION Cough. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Protective gloves. Remove contaminated clothes. 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 Abdominal pain. Burning sensation. Diarrhoea. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: filter respirator for organic gases and vapours. 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. Do NOT absorb in saw-dust or other combustible absorbents. Do NOT let this chemical enter the environment. Separated from strong oxidants. Store in an area without drain or sewer access. Xn symbol R: 63 S: 2-36/37 SEE IMPORTANT INFORMATION ON BACK ICSC: 0477 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-ETHYLHEXANOIC ACID ICSC: 0477 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: The substance is a strong reducing agent and reacts with oxidants. The substance decomposes on heating producing irritating fumes . OCCUPATIONAL EXPOSURE LIMITS: TLV: (Inhalable aerosol and vapor) 5 mg/m³ as TWA; (ACGIH 2005). MAK: IIb (not established but data is available) (DFG 2004). 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; on spraying or dispersing, however, much faster. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes , the skin and the respiratory tract . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Animal tests show that this substance possibly causes toxicity to human reproduction or development. PHYSICAL PROPERTIES Boiling point: 227°C Melting point: -59°C Relative density (water = 1): 0.90 Solubility in water, g/100 ml: 0.14 (very poor) Vapour pressure, Pa at 20°C: 4 Relative vapour density (air = 1): 5 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 118°C o.c. Auto-ignition temperature: 371°C Explosive limits, vol% in air: 0.8-6 Octanol/water partition coefficient as log Pow: 2.64 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. N O T E S NFPA Code: H1; F1; R0; ADDITIONAL INFORMATION ICSC: 0477 2-ETHYLHEXANOIC ACID (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.