International Chemical Safety Cards DECAHYDRONAPHTHALENE (cis/trans isomer mixture) ICSC: 1548 Decalin Perhydronaphthalene Decahydronaphthalin Bicyclo(4.4.0)decane C10H18 Molecular mass: 138.25 ICSC #    1548 CAS #     91-17-8 RTECS # QJ3150000 UN #        1147 October 28, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Flammable. NO open flames, NO sparks, and NO smoking. Powder, carbon dioxide, foam . EXPLOSION Above 57°C explosive vapour/air mixtures may be formed. Above 57°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. Sore throat. Headache. Dizziness. Nausea. Vomiting. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN Redness. Pain. Skin burns. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Severe deep burns. 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 Nausea. Vomiting. Abdominal pain. (Further see Inhalation). Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Ventilation. Collect leaking liquid in sealable containers. Carefully collect remainder, then remove to safe place. Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Fireproof. Separated from oxidants. Cool. Keep in the dark. Well closed to reduce the rate of peroxide formation. R: S: UN Hazard Class: 3 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1548 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 DECAHYDRONAPHTHALENE (cis/trans isomer mixture) ICSC: 1548 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: As a result of flow, agitation, etc., electrostatic charges can be generated. CHEMICAL DANGERS: The substance can form explosive peroxides. On combustion, forms toxic gases. Reacts with oxidants. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK 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 corrosive to the skin and the eyes.The vapour is irritating to the respiratory tract.The substance may cause effects on the central nervous system.If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. PHYSICAL PROPERTIES Boiling point: 185-195°C Melting point: -40°C Relative density (water = 1): 0.87 - 0.90 Solubility in water, g/100 ml at 25°C: very poor Vapour pressure, Pa at 20°C: 127 Relative vapour density (air = 1): 4.8 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01 Flash point: 57°C c.c. Auto-ignition temperature: 255°C Explosive limits, vol% in air: 0.7-5.4 Octanol/water partition coefficient as log Pow: 4.6 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. Bioaccumulation of this chemical may occur in fish. N O T E S Other melting points: Cis-Decahydronaphthalene: -43°C, trans-Decahydronaphthalene: -30°C. Other boiling points: Cis-Decahydronaphthalene: 195°C, trans-Decahydronaphthalene: 187°C. Check for peroxides prior to distillation; eliminate if found. Transport Emergency Card: TEC (R)-30GF1-III NFPA Code: H2; F2; R0; ADDITIONAL INFORMATION ICSC: 1548 DECAHYDRONAPHTHALENE (cis/trans isomer mixture) (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.