International Chemical Safety Cards PHTHALODINITRILE ICSC: 0670 Phthalic acid dinitrile 1,2-Benzenedicarbonitrile 1,2-Dicyanobenzene o-Benzenedinitrile C8H4N2 / C6H4(CN)2 Molecular mass: 128.1 ICSC #    0670 CAS #     91-15-6 RTECS # TI8575000 UN #        3276 October 27, 2004 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. Dry powder, carbon dioxide, foam. EXPLOSION Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Dizziness. Headache. Nausea. Vomiting. Convulsions. Unconsciousness. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN Protective gloves. Rinse skin with plenty of water or shower.  •EYES Safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Dizziness. Headache. Nausea. Vomiting. Convulsions. Unconsciousness. Do not eat, drink, or smoke during work. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give a slurry of activated charcoal in water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Personal protection: P3 filter respirator for toxic particles. Do NOT let this chemical enter the environment. Separated from strong oxidants, food and feedstuffs . Do not transport with food and feedstuffs. R: S: UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0670 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 PHTHALODINITRILE ICSC: 0670 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: YELLOW CRYSTALLINE POWDER , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing toxic fumes including cyanide. On combustion, forms nitrogen oxides. Reacts with strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: The substance may cause effects on the central nervous system. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 304.5°C Melting point: 141°C Density: 1.24 g/cm³ Solubility in water, g/100 ml at 25°C: 0.06 Vapour pressure, Pa at 20°C: 4 Flash point: 162°C Auto-ignition temperature: >580°C Octanol/water partition coefficient as log Pow: 0.58 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal. N O T E S Transport Emergency Card: TEC (R)-61GT1-III ADDITIONAL INFORMATION ICSC: 0670 PHTHALODINITRILE (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.