International Chemical Safety Cards HEXACHLORONAPHTHALENE ICSC: 0997 C10H2Cl6 Molecular mass: 334.7 ICSC #    0997 CAS #     1335-87-1 RTECS # QJ7350000 March 12, 2001 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. Water spray, foam, powder, carbon dioxide. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Local exhaust or breathing protection. Fresh air, rest.  •SKIN MAY BE ABSORBED! Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. 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 Do not eat, drink, or smoke during work. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Chemical protection suit. (Extra personal protection: P2 filter respirator for harmful particles). Separated from strong oxidants, food and feedstuffs . R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0997 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 HEXACHLORONAPHTHALENE ICSC: 0997 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE SOLID IN VARIOUS FORMS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic gases including hydrogen chloride and phosgene . Reacts with strong oxidants. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.2 mg/m³ as TWA; (skin); (ACGIH 2000). OSHA PEL: TWA 0.2 mg/m3 skin NIOSH REL: TWA 0.2 mg/m3 skin NIOSH IDLH: 2 mg/m3 ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its fumes and through the skin. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes and the skin . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis (chloracne). The substance may have effects on the liver , resulting in liver impairment . PHYSICAL PROPERTIES Boiling point: 344-388°C Melting point: 137°C Density: 1.78 g/cm3 Solubility in water: none Vapour pressure, Pa at °C: < 0.01 Relative vapour density (air = 1): 11.6 Octanol/water partition coefficient as log Pow: 7.59 ENVIRONMENTAL DATA In the food chain important to humans, bioaccumulation takes place, specifically in fish. It is strongly advised not to let the chemical enter into the environment because it persists in the environment. The substance may cause long-term effects in the aquatic environment. N O T E S Halowax is a trade name for chlorinated naphthalenes. ADDITIONAL INFORMATION ICSC: 0997 HEXACHLORONAPHTHALENE (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.