International Chemical Safety Cards NAPHTHENIC ACIDS ICSC: 1654 Carboxylic-acids, -naphthenic- Acidic petroleum fraction CnH2n1COOH Molecular mass: 180 - 350 ICSC #    1654 CAS #     1338-24-5 RTECS # QK8750000 April 18, 2007 Validated Ap, 07: fast track update of boiling pt, physical state, mp, spillage disposal and GHS based references (comments from industry) TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Special powder. Carbon dioxide. Foam. Water may be ineffective. EXPLOSION In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE  •INHALATION Cough. Dizziness. Local exhaust. Fresh air, rest.  •SKIN Redness. Pain. Protective gloves. Remove contaminated clothes. 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 Nausea. Vomiting. Diarrhoea. Drowsiness. Do not eat, drink, or smoke during work. Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking liquid in covered containers. Do NOT let this chemical enter the environment. Separated from strong oxidants and metals. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. Signal: Danger Excl mark-Health haz-Enviro Harmful if swallowed Causes damage to nervous system through prolonged or repeated exposure if swallowed Toxic to aquatic life SEE IMPORTANT INFORMATION ON BACK ICSC: 1654 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 NAPHTHENIC ACIDS ICSC: 1654 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: LIGHT YELLOW TO BLACK VISCOUS LIQUID PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating, producing irritating fumes. Attacks metal. 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. The substance may cause effects on the central nervous system. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver and central nervous system. PHYSICAL PROPERTIES Boiling point: 140-370°C Melting point: -35 to 2°C Relative density (water = 1): 0.982 (liquid) Solubility in water: poor Flashpoint: 149°C o.c. Explosive limits, vol% in air: lower 1% Octanol/water partition coefficient as log Pow: 5 - > 6 (calculated) ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. It is strongly advised that this substance does not enter the environment. N O T E S Composition may change physical and toxicological properties. NFPA Code: H2; F1; R0 Card has been partially updated in March 2008: see Environmental Data, ADDITIONAL INFORMATION ICSC: 1654 NAPHTHENIC ACIDS (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.