International Chemical Safety Cards 1-METHYLNAPHTHALENE ICSC: 1275 alpha-Methylnaphthalene alpha-Methylnaftalen C11H10 Molecular mass: 142.2 ICSC #    1275 CAS #     90-12-0 RTECS # QJ9630000 October 09, 1997 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, AFFF, foam, carbon dioxide. EXPLOSION Above 82°C explosive vapour/air mixtures may be formed. Above 82°C use a closed system, ventilation. EXPOSURE  •INHALATION Ventilation. Fresh air, rest.  •SKIN Redness. 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 Do not eat, drink, or smoke during work. Rinse mouth. > Give a slurry of activated charcoal in water to drink.Rest.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. Do NOT let this chemical enter the environment. Marine pollutant. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1275 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 1-METHYLNAPHTHALENE ICSC: 1275 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing acrid smoke and irritating fumes. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, by inhalation of its aerosol 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 irritates the eyes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Lungs may be affected by repeated or prolonged exposure. PHYSICAL PROPERTIES Boiling point: 245°C Melting point: -22°C Relative density (water = 1): 1.02 Solubility in water, g/100 ml at 25°C: 0.003 Vapour pressure, Pa at °C: 7.2 Relative vapour density (air = 1): 4.9 Flash point: 82°C Auto-ignition temperature: 529°C Octanol/water partition coefficient as log Pow: 3.87 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. N O T E S Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. ADDITIONAL INFORMATION ICSC: 1275 1-METHYLNAPHTHALENE (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.