International Chemical Safety Cards 2-NAPHTHOL ICSC: 0719 beta-Naphthol 2-Hydroxynaphthalene 2-Naphthalenol Isonaphthol C10H8O Molecular mass: 144.2 ICSC #    0719 CAS #     135-19-3 RTECS # QL2975000 UN #        3077 EC #         604-007-00-5 April 20, 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 Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Protective gloves. Protective clothing. Rinse and then wash skin with water and soap.  •EYES Redness. Pain. Blurred vision. Safety goggles, or eye protection in combination with breathing protection if powder. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Abdominal pain. Nausea. Vomiting. 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: P2 filter respirator for harmful particles. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. Store in an area without drain or sewer access. Xn symbol N symbol R: 20/22-50 S: 2-24/25-61 UN Hazard Class: 9 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0719 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-NAPHTHOL ICSC: 0719 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE TO YELLOWISH-WHITE CRYSTALS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. NIOSH REL: TWA 2 mg/m3 *Note: The REL also applies to other inorganic tin compounds (as Sn) except tin oxides. NIOSH IDLH: 100 mg/m3 (as Sn) ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: The substance is severely irritating to the eyes . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the kidneys,blood and eyes , resulting in kidney impairment, anaemia and lens opacities. PHYSICAL PROPERTIES Boiling point: 285°C Melting point: 122°C Density: 1.28 g/cm³ Solubility in water, g/100 ml at 25°C: 0.074 Vapour pressure, Pa at 25°C: 2 Relative vapour density (air = 1): 5 Flash point: 153°C Auto-ignition temperature: 550°C Octanol/water partition coefficient as log Pow: 2.7 ENVIRONMENTAL DATA The substance is very toxic to aquatic organisms. N O T E S C.I. Azoic Coupling Component 1, C.I. Developer 5 and C.I. 37500 are trade names. The substance may be transported in molten state at tempature 135-150°C. Transport Emergency Card: TEC (R)-90GM7-III NFPA Code: H; F1; R0 ADDITIONAL INFORMATION ICSC: 0719 2-NAPHTHOL (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.