TEREPHTHALOYL DICHLORIDE ICSC: 0331 1.4-benzenedicarbonyl dichloride terephthalyl dichloride p-phenylenedicarbonyl dichloride terephthalic acid dichloride C8H4Cl2O2 Molecular mass: 203.0 ICSC #    0331 CAS #     100-20-9 RTECS # WZ1797000 EC #         202-829-5 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. Dry sand. Powder, carbon dioxide. NO hydrous agents. 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. Burning sensation. Laboured breathing. Shortness of breath. Symptoms may be delayed (see Notes). Local exhaust or breathing protection. Fresh air, rest. Half-upright position. Refer for medical attention.  •Skin Redness. Pain. skin burns. Protective clothing. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •Eyes Redness. Pain. Blurred vision. Severe deep burns. 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. Nausea. Vomiting. Diarrhoea. Shock or collapse. Do not eat, drink, or smoke during work. Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention. Spillage Disposal Storage Packaging & Labelling Personal protection: P3 filter respirator for toxic particles. Chemical protection suit. Sweep spilled substance into covered plastic containers. Carefully collect remainder, then remove to safe place. Separated from strong oxidants. Dry. Well closed. Do not store in metal containers. Signal: Danger Corr May be harmful if swallowed Causes severe skin burns and eye damage TEREPHTHALOYL DICHLORIDE ICSC: 0331 Important Data Physical State; Appearance: WHITE POWDER OR COLOURLESS NEEDLES , WITH PUNGENT ODOUR. Physical Dangers: Dust explosion possible if in powder or granular form, mixed with air. Chemical Dangers: The substance decomposes on heating producing toxic and corrosive fumes . Reacts with strong oxidants. Reacts with water to produce hydrogen chloride (see ICSC0163) Attacks many metals in the presence of water. Occupational Exposure Limits: TLV not established. MAK not established. Routes of Exposure: Serious local effects by all routes of exposure. Inhalation Risk: A harmful concentration of airborne particles can be reached quickly when dispersed Effects of Short-Term Exposure: The substance is corrosive to the eyes, the skin, and the respiratory tract. Corrosive on ingestion. Exposure may result in asphyxiation due to swelling in the throat. Inhalation of this substance may cause lung oedema (see Notes). Effects of Long-Term or Repeated Exposure: Physical Properties Boiling point: 264°C Melting point: 79.5- 84°C Density: 1.32 g/cm3 Solubility in water: reaction Vapour pressure, Pa at 20°C: 320 Flash point: 180°C Octanol/water partition coefficient as log Pow: 0.88 (calculated) Environmental Data N O T E S The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. NFPA Code: H3; F1; R; 0 ADDITIONAL INFORMATION ICSC: 0331 TEREPHTHALOYL DICHLORIDE (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.