International Chemical Safety Cards 2,3-DINITROTOLUENE ICSC: 0726 1-Methyl-2,3-dinitrobenzene 2,3-DNT C6H3CH3(NO2)2 / C7H6N2O4 Molecular mass: 182.1 ICSC #    0726 CAS #     602-01-7 RTECS # XT1400000 UN #        3454 EC #         609-050-00-3 April 21, 2005 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 Finely dispersed particles form explosive mixtures in air. Risk of explosion on contact with many substances. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Blue lips or finger nails. Blue skin. Headache. Dizziness. Nausea. Confusion. Convulsions. Unconsciousness. Local exhaust or breathing protection. Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. (Further see Inhalation). Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION (Further see Inhalation). Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Fireproof. Separated from strong bases,food and feedstuffsoxidants,strong reducing agents. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access. Do not transport with food and feedstuffs. Note: E T symbol N symbol R: 45-23/24/25-48/22-62-68-50/53 S: 53-45-60-61 UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0726 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-DINITROTOLUENE ICSC: 0726 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: YELLOW CRYSTALS , WITH CHARACTERISTIC 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 fumesincluding nitrogen oxides even in absence of air. Reacts with reducing agents , strong bases and oxidants causing explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation, through the skin and by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: The substance is mildly irritating to the skin . The substance may cause effects on the blood , resulting in formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the blood , resulting in formation of methaemoglobin. PHYSICAL PROPERTIES Boiling point (decomposes): 250-300°C Melting point: 59-61°C Relative density (water = 1): 1.3 (liquid) Solubility in water: very poor Relative vapour density (air = 1): 6.28 Octanol/water partition coefficient as log Pow: 2.0 (calculated) ENVIRONMENTAL DATA The substance is very toxic to aquatic organisms. N O T E S Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT take working clothes home. UN number for molten form: UN1600, TEC( R): 61GT1-II. Transport Emergency Card: TEC (R)-61S3454; 61GT2-II NFPA Code: H3; F1; R3; ADDITIONAL INFORMATION ICSC: 0726 2,3-DINITROTOLUENE (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.