- CHEMICAL DANGERS:
- Cyanogen chloride (CK) decomposes on heating, producing toxic and corrosive fumes (hydrogen cyanide, hydrochloric acid, and nitrogen oxides). See the emergency response cards for hydrogen cyanide and hydrochloric acid.
- Cyanogen chloride (CK) reacts slowly with water or water vapor to form toxic hydrogen cyanide and hydrogen chloride. See the emergency response cards for hydrogen cyanide and hydrogen chloride.
- Cyanogen chloride (CK) is incompatible with or may react with most basic and acidic solvents including water.
- Cyanogen chloride (CK) is unstable; it may be stabilized (inhibited) to prevent polymerization.
- EXPLOSION HAZARDS:
- Upper and lower explosive (flammable) limits in air are not available for cyanogen chloride (CK).
- Containers may explode when heated or if they are contaminated with water.
- Ruptured cylinders may rocket.
- FIRE FIGHTING INFORMATION:
- Fire will produce irritating, corrosive, and/or toxic gases.
- Cyanogen chloride (CK) may burn, but it does not ignite readily.
- For small fires, use dry chemical or carbon dioxide.
- For large fires, use water spray, fog, or regular foam. Move containers from the fire area if it is possible to do so without risk to personnel. Do not get water inside containers. Damaged cylinders should be handled only by specialists.
- For fire involving tanks, fight the fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after the fire is out. Do not direct water at the source of the leak or at safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tanks. Always stay away from tanks engulfed in fire.
- Run-off from fire control may cause pollution.
- If the situation allows, control and properly dispose of run-off (effluent).
- INITIAL ISOLATION AND PROTECTIVE ACTION DISTANCES:
- If a tank, rail car, or tank truck is involved in a fire, isolate it for 1.0 mi (1600 m) in all directions; also consider initial evacuation for 1.0 mi (1600 m) in all directions.
- Small spills (involving the release of approximately 52.83 gallons (200 liters) or less)
- First isolate in all directions: 200 ft (60 m).
- Then protect persons downwind during the day: 0.4 mi (0.6 km).
- Then protect persons downwind during the night: 1.8 mi (2.8 km).
- Large spills (involving quantities greater than 52.83 gallons (200 liters)):
- First isolate in all directions: 1400 ft (450 m).
- Then protect persons downwind during the day: 2.7 mi (4.3 km).
- Then protect persons downwind during the night: 6.3 mi (10.1 km).
- Small spills (involving the release of approximately 52.83 gallons (200 liters) or less), when cyanogen chloride is used as a weapon :
- First isolate in all directions: 200 ft (60 m).
- Then protect persons downwind during the day: 0.4 mi (0.7 km).
- Then protect persons downwind during the night: 1.5 mi (2.5 km).
- Large spills (involving quantities greater than 52.83 gallons (200 liters)), when cyanogen chloride is used as a weapon:
- First isolate in all directions: 1300 ft (420 m).
- Then protect persons downwind during the day: 2.5 mi (4.1 km).
- Then protect persons downwind during the night: 5.0 mi (8.1 km).
- PHYSICAL DANGERS:
- Vapors may be heavier than air. They will spread along the ground and collect and stay in poorly-ventilated, low-lying, or confined areas (e.g., sewers, basements, and tanks).
- Hazardous concentrations may develop quickly in enclosed, poorly-ventilated, or low-lying areas. Keep out of these areas. Stay upwind.
- NFPA 704 Signal:
- Health: 4
- Flammability: 0
- Reactivity: 2
- Special:
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- SAMPLING AND ANALYSIS:
- OSHA: Not established/determined
- NIOSH: Not established/determined
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