International Chemical Safety Cards 2,4-DICHLOROPHENOL ICSC: 0438 2,4-DCP C6H4Cl2O Molecular mass: 163.0 ICSC #    0438 CAS #     120-83-2 RTECS # SK8575000 UN #        2020 EC #         604-011-00-7 April 08, 1997 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 AVOID ALL CONTACT!  •INHALATION Burning sensation. Sore throat. Cough. Shortness of breath. Local exhaust or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Pain. Blisters. (Further see Inhalation). Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. Severe deep burns. 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 Burning sensation. Abdominal pain. Tremor. Weakness. Convulsions. Laboured breathing. Shock or collapse. Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. Personal protection: complete protective clothing including self-contained breathing apparatus. Separated from strong oxidants, food and feedstuffs . Ventilation along the floor. Do not transport with food and feedstuffs. T symbol N symbol R: 22-24-34-51/53 S: 1/2-26-36/37/39-45-61 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0438 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 2,4-DICHLOROPHENOL ICSC: 0438 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS CRYSTALS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour is heavier than air. CHEMICAL DANGERS: On combustion, forms corrosive gases (hydrogen chloride). Upon heating, toxic fumes are formed. Reacts violently with strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol, through the skin 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: Corrosive. The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Exposure to high level may result in death. Exposure to small amounts of the molten or liquid form of the substance may result in extensive skin absorption and rapid death. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 210.0°C Melting point: 45.0°C Solubility in water, g/100 ml at 20°C: 0.5 Vapour pressure, kPa at 53°C: 133 Relative vapour density (air = 1): 5.6 Flash point: 114°C o.c. Octanol/water partition coefficient as log Pow: 3.06 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. N O T E S Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. Card has been partly updated in October 2004. See sections Occupational Exposure Limits, EU classification, Emergency Response. Transport Emergency Card: TEC (R)-61S2020 NFPA Code: H; F1; R0. ADDITIONAL INFORMATION ICSC: 0438 2,4-DICHLOROPHENOL (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.