1,3-DICHLOROBENZENE ICSC: 1095 m-Dichlorobenzene m-Phenylene dichloride C6H4Cl2 Molecular mass: 147.00 ICSC #    1095 CAS #     541-73-1 RTECS # CZ4499000 UN #        2810 EC #         602-067-00-7 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 Above 63°C explosive vapour/air mixtures may be formed. Above 63°C use a closed system, ventilation. In case of fire: keep drums, etc., cool by spraying with water. Exposure PREVENT GENERATION OF MISTS!  •Inhalation Cough. Drowsiness. Nausea. Sore throat. Vomiting. See Notes. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •Skin Redness. Pain. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •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 Burning sensation. Diarrhoea. Nausea. Vomiting. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. 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. (Extra personal protection: A/P2 filter respirator for organic vapour and harmful dust). Provision to contain effluent from fire extinguishing. Store in an area without drain or sewer access. Separated from strong oxidants, aluminium , food and feedstuffs . Well closed. Do not transport with food and feedstuffs. Xn symbol N symbol R: 22-51/53 S: 2-61 UN Hazard Class: 6.1 UN Packing Group: III 1,3-DICHLOROBENZENE ICSC: 1095 Important Data Physical State; Appearance: COLOURLESS LIQUID Physical Dangers: The vapour is heavier than air. Chemical Dangers: The substance decomposes on burning producing toxic fumes including hydrogen chloride . Reacts with strong oxidants. Reacts violently with aluminium . Occupational Exposure Limits: TLV not established. MAK: 2 ppm, 12 mg/m3 Peak limitation category: II(2); Pregnancy risk group: C; (DFG 2008). Routes of Exposure: The substance can be absorbed into the body by inhalation 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 vapour irritates the eyes, the skin and the respiratory tract. See Notes. Effects of Long-Term or Repeated Exposure: The substance may have effects on the kidneys and liver . See Notes. Physical Properties Boiling point: 173°C Melting point: -24.8°C Relative density (water = 1): 1.288 Solubility in water: none Vapour pressure, kPa at 25°C: 0.286 Relative vapour density (air = 1): 5.1 Flash point: 63°C Octanol/water partition coefficient as log Pow: 3.53 Environmental Data The substance is toxic to aquatic organisms. In the food chain important to humans, bioaccumulation takes place, specifically in fish . N O T E S Data on the toxicity of m-dichlorobenzene are limited. Also consult ICSC #0037 (p-Dichlorobenzene) and #1066 (o-Dichlorobenzene). Card has been partially updated in November 2008: see Occupational Exposure Limits, Storage. ADDITIONAL INFORMATION ICSC: 1095 1,3-DICHLOROBENZENE (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.