International Chemical Safety Cards 2,4-TOLUENEDIAMINE ICSC: 0582 4-Methyl-m-phenylenediamine 2,4-Diaminotoluene 2,4-TDA C7H10N2 / CH3C6H3(NH2)2 Molecular mass: 122.2 ICSC #    0582 CAS #     95-80-7 RTECS # XS9625000 UN #        1709 EC #         612-099-00-3 November 23, 1998 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, water spray, foam, carbon dioxide. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!  •INHALATION Cough. Sore throat. Blue lips or finger nails. Blue skin. Headache. Dizziness. Nausea. Vomiting. Confusion. Convulsions. Unconsciousness. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Pain. (See Inhalation). Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Severe deep burns. Safety goggles, (if molten), face shield. 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. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Do NOT wash away into sewer. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: chemical protection suit including self-contained breathing apparatus). Note: E T symbol N symbol R: 45-21-25-36-43-51/53 S: 53-45-61 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0582 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-TOLUENEDIAMINE ICSC: 0582 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS CRYSTALS. TURNS DARK ON EXPOSURE TO AIR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes of nitrogen oxides. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK: class 2 (1998) NIOSH REL: Ca (all isomers) See Appendix A NIOSH IDLH: Potential occupational carcinogen No data ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol or vapour (when in molten state), 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: The substance irritates the eyes, the skin and the respiratory tract. The hot liquid may cause severe skin burns. The substance may cause effects on the liver and the blood , resulting in liver damage and formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. This substance is possibly carcinogenic to humans. May cause genetic damage in humans. PHYSICAL PROPERTIES Boiling point: 292°C Melting point: 99°C Relative density (water = 1): see Notes Solubility in water: good Vapour pressure, kPa at 106.5°C: 0.13 Relative vapour density (air = 1): 4.2 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 149°C Octanol/water partition coefficient as log Pow: 0.35 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. N O T E S May be handled and shipped in the molten state. Density of the solid is unknown in literature, but density of the liquid (water = 1) at 100°C is 1.045. Depending on the degree of exposure, periodic medical examination is indicated. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Azogen Developer H, Benzofur MT, Eucanine GB, Fouramine, Fourrine, Pelagol, Pontamine Developer TN, Tertral G, Zoba GKE, and Zogen Developer H are trade names. Transport Emergency Card: TEC (R)-61G12c ADDITIONAL INFORMATION ICSC: 0582 2,4-TOLUENEDIAMINE (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.