International Chemical Safety Cards o-DIANISIDINE ICSC: 1582 C.I. Disperse Black 6 3,3'-Dimethoxybenzidine 3,3'-Dianisidine 3,3'-Dimethoxy-4,4'-diaminobiphenyl C14H16N2O2 Molecular mass: 244.3 ICSC #    1582 CAS #     119-90-4 RTECS # DD0875000 UN #        2431 EC #         612-036-00-X April 20, 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. Water spray. Dry powder. Carbon dioxide. EXPLOSION EXPOSURE See EFFECTS OF LONG-TERM OR REPEATED EXPOSURE. AVOID ALL CONTACT!  •INHALATION Cough. Ventilation (not if powder), local exhaust, or breathing protection. Fresh air, rest.  •SKIN Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •EYES Redness. 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 Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P3 filter respirator for toxic particles. Chemical protection suit. Vacuum spilled material. Separated from oxidantsandfood and feedstuffs. Well closed. Do not transport with food and feedstuffs. Note: E T symbol R: 45-22 S: 53-45 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1582 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-DIANISIDINE ICSC: 1582 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS CRYSTALS PHYSICAL DANGERS: The vapour is heavier than air and may travel along the ground; distant ignition possible. CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes including nitrogen oxides . Reacts with oxidants. OCCUPATIONAL EXPOSURE LIMITS: MAK: Carcinogen category: 2; (DFG 2004). TLV 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 on spraying or when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: This substance is probably carcinogenic to humans. PHYSICAL PROPERTIES Melting point: 137.5°C Solubility in water, g/100 ml at 25°C: 0.006 Vapour pressure, Pa at °C: negligible Flash point: 206°C c.c. Octanol/water partition coefficient as log Pow: 1.81 ENVIRONMENTAL DATA N O T E S Do NOT take working clothes home. Depending on the degree of exposure, periodic medical examination is suggested. Transport Emergency Card: TEC (R)-61S2431 or 61GT1-III NFPA Code: H-; F1; R0; ADDITIONAL INFORMATION ICSC: 1582 o-DIANISIDINE (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.