International Chemical Safety Cards DINITROTOLUENE (MIXED ISOMERS) ICSC: 0465 DINITROTOLUENE (MIXED ISOMERS) DNT (mixed isomers) Methyl dinitrobenzene (mixed isomers) Dinitrotoluol (mixed isomers) C7H6N2O4/C6H3(CH3)(NO2)2 Molecular mass: 182.1 CAS # 25321-14-6 RTECS # XT1300000 ICSC # 0465 UN # 2038 (see Notes) EC # 609-007-00-9 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames, NO sparks, and NO smoking. Powder, water spray, foam, carbon dioxide. EXPLOSION Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. Combat fire from a sheltered position. EXPOSURE PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! INHALATION Drowsiness. Nausea. Vomiting. Weakness. (see Ingestion). Local exhaust or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention. SKIN MAY BE ABSORBED! Blue lips or fingernails. Blue skin (further see Inhalation). Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention. EYES Safety goggles, face shield. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. INGESTION Blue lips or fingernails. Blue skin. Dizziness. Headache. Laboured breathing. Symptoms of delayed effects. Do not eat, drink, or smoke during work. Rinse mouth. Give large quantities of water. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. Wear protective gloves when inducing vomiting. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water, then remove to safe place (extra personal protection: self-contained breathing apparatus). Fireproof. Separated from strong oxidants, strong bases, food and feedstuffs, metals such as tin and zinc. Do not transport with food and feedstuffs. T symbol R: 23/24/25-33 S: (1/2-)28-37-45 Note: C UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0465 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

International Chemical Safety Cards DINITROTOLUENE (MIXED ISOMERS) ICSC: 0465 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: YELLOW, CRYSTALLINE POWDER OR A VISCOUS, OILY LIQUID IN MOLTEN STATE , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. CHEMICAL DANGERS: Heating may cause violent combustion or explosion. The substance decomposes on heating producing toxic gases and fumes (carbon monoxide - see ICSC # 0023 and nitrogen oxides). Reacts violently with strong oxidants, strong bases and metals such as tin and zinc, causing fire and explosion hazard. Attacks some forms of plastics, rubber, and coatings. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV: ppm; 1.5 mg/m3 (as TWA) (skin) (ACGIH 1995-1996). OSHA PEL: TWA 1.5 mg/m3 skin NIOSH REL: Ca TWA 1.5 mg/m3 skin See Appendix A NIOSH IDLH: Potential occupational carcinogen 50 mg/m3 ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and through the skin, and by ingestion. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. EFFECTS OF SHORT-TERM EXPOSURE: The substance may cause effects on the the blood , resulting in the formation of methaemoglobin. Exposure could cause lowering of consciousness. Exposure to high concentrations may result in death. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the liver. May impair male fertility. PHYSICAL PROPERTIES Boiling point (decomposes): 250-300°C Melting point: 54-93°C Relative density (water = 1): 1.3 (liquid) Solubility in water, g/100 ml: <0.03 Vapour pressure, kPa at 20°C: 0.13 Relative vapour density (air = 1): 6.28 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01 Flash point: 207°C c.c. Octanol/water partition coefficient as log Pow: 2.0 ENVIRONMENTAL DATA N O T E S Commercial grades of DNT typically consist of a mixture of all 6 isomers, but mainly 2,4-DNT(78%) and 2,6-DNT(19%). Other UN-number: 1600 (molten). Explosive limits are unknown in literature. Use of alcoholic beverages enhances the harmful effect. Check for peroxides prior to distillation; eliminate if found. Protective Clothing made of Saranex(TM) recommended. Transport Emergency Card: TEC (R)-764 NFPA Code: H3; F1; R3; ADDITIONAL INFORMATION ICSC: 0465 DINITROTOLUENE (MIXED ISOMERS) © IPCS, CEC, 1993

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 IDLH values.