International Chemical Safety Cards DIAZENEDICARBOXAMIDE ICSC: 0380 DIAZENEDICARBOXAMIDE Azodicarbonamide 1,1'-Azobisformamide C2H4N4O2 / NH2CON=NCONH2 Molecular mass: 116.1 CAS # 123-77-3 RTECS # LQ1040000 ICSC # 0380 UN # 3242 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Flammable. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames, NO sparks, and NO smoking. Foam, powder. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE! INHALATION Cough. Headache. Shortness of breath. Sore throat. Wheezing. Fatigue. Cramps. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention. SKIN Redness. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. EYES Redness. Pain. Safety goggles, 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. Rinse mouth. Give plenty of water to drink. Rest. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles). UN Hazard Class: 4.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0380 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 DIAZENEDICARBOXAMIDE ICSC: 0380 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ORANGE RED CRYSTALS OR YELLOW POWDER. CHEMICAL DANGERS: The substance decomposes on heating or on burning producing toxic fumes (nitrogen oxides). OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol. 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 irritates the eyes and the respiratory tract. Inhalation of dust may cause asthmatic reactions (see Notes). EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma. PHYSICAL PROPERTIES Melting point (decomposes): 225°C Relative density (water = 1): 1.65 Solubility in water: none ENVIRONMENTAL DATA N O T E S The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance. Genitron AC, Kempore 125, Porofor LK1074 and Unifoam AZ are trade names. Transport Emergency Card: TEC (R)-41G19 ADDITIONAL INFORMATION ICSC: 0380 DIAZENEDICARBOXAMIDE © 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.