International Chemical Safety Cards 4,4'-METHYLENEDIANILINE ICSC: 1111 4,4'-Diaminodiphenylmethane 4,4'-Methylenebisbenzenamine MDA C13H14N2 / NH2C6H4CH2C6H4NH2 Molecular mass: 198.3 ICSC #    1111 CAS #     101-77-9 RTECS # BY5425000 UN #        2651 EC #         612-051-00-1 March 24, 1999 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 EXPOSURE AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Abdominal pain. Nausea. Vomiting. Fever and chill. Ventilation (not if powder), local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN MAY BE ABSORBED! (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 spectacles, or face shield. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Jaundice. (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 Sweep spilled substance into sealable containers;if appropreate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Separated from strong oxidants, food and feedstuffs . Well closed. Do not transport with food and feedstuffs. Marine pollutant. Note: E T symbol N symbol R: 45-39/23/24/25-43-48/20/21/22-68-51/53 S: 53-45-61 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1111 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 4,4'-METHYLENEDIANILINE ICSC: 1111 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS TO PALE YELLOW FLAKES , WITH CHARACTERISTIC ODOUR. TURNS DARK ON EXPOSURE TO AIR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating or on burning producing toxic fumesincluding aniline and nitrogen oxides. The substance is a weak base. Reacts violently with strong oxidants. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.1 ppm as TWA; (skin); A3; (ACGIH 2004). OSHA PEL: 1910.1050 TWA 0.010 ppm ST 0.100 ppm NIOSH REL: Ca 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, 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 liver , resulting in liver impairment. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. This substance is possibly carcinogenic to humans. PHYSICAL PROPERTIES Boiling point at 102 kPa: 398-399°C Melting point: 91.5-92°C Density: 0.5 g/cm3 Solubility in water: poor Vapour pressure, Pa at 197°C: 133 Flash point: 220°C c.c. Octanol/water partition coefficient as log Pow: 1.6 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. It is strongly advised not to let the chemical enter into the environment because it persists in the environment. N O T E S Depending on the degree of exposure, periodic medical examination is suggested. Ancamine TL, Araldite hardener 972, Epicure DDM, Slumicure M, Tonox are trade names. Card has been partly updated in October 2004. See sections Occupational Exposure Limits, EU classification, Emergency Response. Transport Emergency Card: TEC (R)-61GT2-III > NFPA Code: H3; F1; R0; ADDITIONAL INFORMATION ICSC: 1111 4,4'-METHYLENEDIANILINE (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.