International Chemical Safety Cards 1,2,4-TRICHLOROBENZENE ICSC: 1049 1,2,4-Trichlorobenzol unsym-Trichlorobenzene C6H3Cl3 Molecular mass: 181.5 ICSC #    1049 CAS #     120-82-1 RTECS # DC2100000 UN #        2321 EC #         602-087-00-6 November 26, 2003 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Powder, water spray, foam, carbon dioxide. EXPLOSION EXPOSURE PREVENT GENERATION OF MISTS!  •INHALATION Cough. Sore throat. Burning sensation. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN Dry skin. Redness. Roughness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Safety goggles, 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 Abdominal pain. Sore throat. Vomiting. 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 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. Sweep spilled substance into sealable containers , if solid. Do NOT let this chemical enter the environment. (Extra personal protection: filter respirator for organic gases and vapours.) Separated from strong oxidants, acids, food and feedstuffs . Do not transport with food and feedstuffs. Marine pollutant. Xn symbol N symbol R: 22-38-50/53 S: 2-23-37/39-60-61 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1049 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 1,2,4-TRICHLOROBENZENE ICSC: 1049 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID OR WHITE CRYSTALS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes including hydrogen chloride . Reacts violently with oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV: 5 ppm; (Ceiling value); (ACGIH 2003). EU OEL: as TWA 2 ppm, 15.1 mg/m³; as STEL 5 ppm, 37.8 mg/m³; (skin); (EU 2003). OSHA PEL: none NIOSH REL: C 5 ppm (40 mg/m3) NIOSH IDLH: No data ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation, through the skin and by ingestion. INHALATION RISK: A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes the skin and the respiratory tract . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The liquid defats the skin. The substance may have effects on the liver . PHYSICAL PROPERTIES Boiling point: 213°C Melting point: 17°C Relative density (water = 1): 1.5 Solubility in water: 34.6 mg/l Vapour pressure, Pa at 25°C: 40 Relative vapour density (air = 1): 6.26 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.002 Flash point: 105°C c.c. Auto-ignition temperature: 571°C Explosive limits, vol% in air: 2.5-6.6 (at 150°C) Octanol/water partition coefficient as log Pow: 3.98 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. N O T E S The occupational exposure limit value should not be exceeded during any part of the working exposure. Also consult ICSC0344 1,3,5-Trichlorobenzene, and ICSC1222 1,2,3-Trichlorobenzene. Transport Emergency Card: TEC (R)-61GT1-III NFPA Code: H2; F1; R0; ADDITIONAL INFORMATION ICSC: 1049 1,2,4-TRICHLOROBENZENE (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.