International Chemical Safety Cards o-NITROTOLUENE ICSC: 0931 2-Nitrotoluene 1-Methyl-2-nitrobenzene o-Methylnitrobenzene o-Mononitrotoluene ONT C7H7NO2 / C6H4(CH3)(NO2) Molecular mass: 137.1 ICSC #    0931 CAS #     88-72-2 RTECS # XT3150000 UN #        1664 EC #         609-006-00-3 April 13, 2000 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. NO contact with oxidants . Powder, water spray, foam, carbon dioxide. EXPLOSION Risk of fire and explosion on contact with acid(s), oxidants. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE PREVENT GENERATION OF MISTS! STRICT HYGIENE!  •INHALATION Headache. Blue lips or finger nails. Blue skin. Dizziness. Laboured breathing. Local exhaust or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! (Further see Inhalation). Protective gloves. Protective clothing. Rinse and then wash skin with water and soap. Refer for medical attention. Wear protective gloves when administering first aid.  •EYES Redness. Pain. 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 Abdominal pain. (Further see Inhalation). Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment. Chemical protection suit including self-contained breathing apparatus. Separated from food and feedstuffs . See Chemical Dangers. Well closed. Ventilation along the floor. Do not transport with food and feedstuffs. Marine pollutant. Note: C T symbol N symbol R: 23/24/25-33-51/53 S: 1/2-28-37-45-61 UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0931 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 o-NITROTOLUENE ICSC: 0931 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: YELLOW TO COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on contact with strong oxidants, reducing agents, acids or bases producing toxic fumes , causing fire and explosion hazard. Attacks some forms of plastics, rubber, and coatings. On combustion, forms nitrogen oxides , carbon monoxide . OCCUPATIONAL EXPOSURE LIMITS: TLV (as TWA): 2 ppm; 11 mg/m3 (skin) (ACGIH 1999). MAK: class 2; skin (1999) OSHA PEL: TWA 5 ppm (30 mg/m3) skin NIOSH REL: TWA 2 ppm (11 mg/m3) skin NIOSH IDLH: 200 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. INHALATION RISK: A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes. 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 liver, blood and testes. PHYSICAL PROPERTIES Boiling point: 222°C Melting point: -10°C Relative density (water = 1): 1.16 Solubility in water, g/100 ml at 20°C: 0.044 Vapour pressure, kPa at 20°C: 0.02 Relative vapour density (air = 1): 4.73 Flash point: 95°C c.c. Auto-ignition temperature: 420°C Explosive limits, vol% in air: 1.47-8.8 Octanol/water partition coefficient as log Pow: 2.3 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. N O T E S Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Depending on the degree of exposure, periodic medical examination is indicated. Transport Emergency Card: TEC (R)-61G61b NFPA Code: H 2; F 1; R 4; ADDITIONAL INFORMATION ICSC: 0931 o-NITROTOLUENE (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.