International Chemical Safety Cards 1-CHLORO-2,4-DINITROBENZENE ICSC: 0416 1,3-Dinitro-4-chlorobenzene 2,4-Dinitrophenyl chloride DNCB C6H3ClN2O4 / C6H3Cl(NO2)2 Molecular mass: 202.6 ICSC #    0416 CAS #     97-00-7 RTECS # CZ0525000 UN #        1577 EC #         610-003-00-4 October 19, 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 Finely dispersed particles form explosive mixtures in air. Do NOT expose to friction or shock. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE!  •INHALATION Blue lips or finger nails. Blue skin. Dizziness. Headache. Laboured breathing. Nausea. Vomiting. Disturbed vision. Local exhaust or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Pain. (Further see Inhalation). Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. 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 Abdominal pain. Blue skin. Dizziness. Headache. Laboured breathing. Nausea. Vomiting. Do not eat, drink, or smoke during work. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Wear protective gloves when inducing vomiting. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Vacuum spilled material then remove to safe place. Do NOT let this chemical enter the environment. Chemical protection suit including self-contained breathing apparatus. Fireproof. Separated from strong oxidants, strong bases, food and feedstuffs . Cool. Do not transport with food and feedstuffs. Marine pollutant. Note: C T symbol N symbol R: 23/24/25-33-50/53 S: 1/2-28-36/37-45-60-61 UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0416 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 1-CHLORO-2,4-DINITROBENZENE ICSC: 0416 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: PALE YELLOW CRYSTALS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: May explosively decompose on shock, friction, or concussion. May explode on heating even in the absence of air. Reacts with strong oxidants and strong bases. On combustion, forms toxic and corrosive gases and fumesincluding hydrogen chloride and nitrogen oxides. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and 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 respiratory tract and severely irritates the skin. The substance may cause effects on the blood , resulting in formation of methaemoglobin. Exposure to high concentrations may result in death. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the nervous system , resulting in impaired vision. PHYSICAL PROPERTIES Boiling point: 315°C Melting point: 54°C Density: 1.7 g/cm3 Solubility in water: none Vapour pressure, Pa at 20°C: negligible Flash point: 179°C Auto-ignition temperature: 432°C Explosive limits, vol% in air: 2.0-22 ENVIRONMENTAL DATA The substance is very toxic to aquatic organisms. N O T E S Transport Emergency Card: TEC (R)-61G12b NFPA Code: H 3; F 1; R 4 ADDITIONAL INFORMATION ICSC: 0416 1-CHLORO-2,4-DINITROBENZENE (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.