International Chemical Safety Cards 2,3-DICHLORO-1-NITROBENZENE ICSC: 0251 2,3-Dichloronitrobenzene 1,2-Dichloro-3-nitrobenzene 1-Nitro-2,3-dichlorobenzene C6H3Cl2NO2 Molecular mass: 192.0 ICSC #    0251 CAS #     3209-22-1 RTECS # CZ5240000 UN #        1578 April 10, 2008 Validated 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. Foam. Dry powder. Carbon dioxide. 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. Ventilation (not if powder). Fresh air, rest.  •SKIN Protective gloves. Rinse and then wash skin with water and soap.  •EYES Redness. Safety spectacles, Rinse with plenty of water (remove contact lenses if easily possible).  •INGESTION Do not eat, drink, or smoke during work. Rinse mouth. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: particulate filter adapted to the airborne concentration of the substance. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. Separated from bases, strong oxidants and food and feedstuffs. Do not transport with food and feedstuffs. UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0251 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 2,3-DICHLORO-1-NITROBENZENE ICSC: 0251 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS TO YELLOW CRYSTALS. PHYSICAL DANGERS: CHEMICAL DANGERS: On contact with hot surfaces or flames this substance decomposes forming toxic and corrosive fumes of nitrogen oxides and hydrogen chloride (see ICSC 0163). Reacts with strong oxidants and bases . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body 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: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 257-258°C Melting point: 61°C Density: 1.7 g/cm³ Solubility in water: none Vapour pressure, Pa at 20°C: negligible Relative vapour density (air = 1): 6.6 Flash point: 123°C Octanol/water partition coefficient as log Pow: 3.05 ENVIRONMENTAL DATA It is strongly advised that this substance does not enter the environment. See Notes. N O T E S Health effects of exposure to the substance have not been investigated adequately. Environmental effects from the substance have not been investigatedadequately. Transport Emergency Card: TEC (R)-61S1578 ADDITIONAL INFORMATION ICSC: 0251 2,3-DICHLORO-1-NITROBENZENE (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.