International Chemical Safety Cards CYANOGEN CHLORIDE ICSC: 1053 CYANOGEN CHLORIDE Chlorine cyanide Chlorocyanide Chlorocyanogen (cylinder) ClCN Molecular mass: 61.5 CAS # 506-77-4 RTECS # GT2275000 ICSC # 1053 UN # 1589 (inhibited) TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. Heating will cause rise in pressure with risk of bursting. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION In case of fire: keep cylinder cool by spraying with water but NO direct contact with water.   EXPOSURE AVOID ALL CONTACT! INHALATION Confusion. Drowsiness. Nausea. Sore throat. Unconsciousness. Vomiting. Symptoms may be delayed (see Notes). Local exhaust or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention. SKIN Redness. Pain. THE LIQUID MAY BE ABSORBED! ON CONTACT WITH LIQUID: FROSTBITE. Cold-insulating gloves. Protective clothing. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention. EYES ON CONTACT WITH LIQUID: FROSTBITE. Redness. Pain. Safety goggles, 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 SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. Contain or absorb leaking liquid with sand or inert absorbent. Do NOT wash away into sewer. NEVER direct water jet on liquid. Remove vapour cloud with fine water spray (extra personal protection: complete protective clothing including self-contained breathing apparatus). Fireproof if in building. Cool. UN Hazard Class: 2.3 Marine pollutant. SEE IMPORTANT INFORMATION ON BACK ICSC: 1053 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards CYANOGEN CHLORIDE ICSC: 1053 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS, COMPRESSED LIQUEFIED GAS , WITH PUNGENT ODOUR. PHYSICAL DANGERS: The gas is heavier than air. CHEMICAL DANGERS: The substance may polymerize violently if contaminated with hydrogen chloride or ammonium chloride. The substance decomposes on heating producing toxic and corrosive fumes (hydrogen cyanide, hydrochloric acid, nitrogen oxides). Reacts slowly with water or water vapour to form hydrogen chloride. Attacks copper and brass. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV: 0.3 ppm; 0.75 mg/m3 (as CEILING) (ACGIH 1992-1993). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: A harmful concentration of this gas in the air will be reached very quickly on loss of containment. EFFECTS OF SHORT-TERM EXPOSURE: Tear drawing. The substance severely irritates the eyes, the skin and the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes). Rapid evaporation of the liquid may cause frostbite. Exposure above the OEL may result in death. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 13.8°C Melting point: -6°C Relative density (water = 1): 1.186 Solubility in water: soluble (2500 ml/100 ml at 20°C) Vapour pressure, kPa at 21.1°C: 1987 Relative vapour density (air = 1): 2.16

ENVIRONMENTAL DATA
NOTES
The applying occupational exposure limit value should not be exceeded during any part of the working exposure. The symptoms of lung oedema 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. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT spray water on leaking cylinder (to prevent corrosion of cylinder). Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Transport Emergency Card: TEC (R)-801

ADDITIONAL INFORMATION
ICSC: 1053 CYANOGEN CHLORIDE © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.