- CHEMICAL DANGERS:
- QNB lightly attacks aluminum and anodized aluminum after 3 months at 160°F (71°C). It has no effect on steel or stainless steel after 3 months.
- Contact with metals may evolve flammable hydrogen gas.
- EXPLOSION HAZARDS:
- When heated, aerosols may form explosive mixtures with air, presenting an explosion hazard indoors, outdoors, and in sewers.
- Containers may explode when heated.
- FIRE FIGHTING INFORMATION:
- QNB is combustible.
- The agent may burn but does not ignite readily.
- Fire may produce irritating, corrosive, and/or toxic gases.
- The agent may be transported in a molten form.
- For small fires, use dry chemical, carbon dioxide, or water spray.
- For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Move containers from the fire area if it is possible to do so without risk to personnel. Dike fire control water for later disposal; do not scatter the material.
- For fire involving tanks or car/trailer loads, fight the fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after the fire is out. 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 or dilution water may be corrosive and/or toxic, and it 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 0.5 mi (800 m) in all directions; also consider initial evacuation for 0.5 mi (800 m) in all directions.
- Small spills (involving the release of approximately 52.83 gallons (200 liters) or less), when used as a weapon
- First isolate in all directions: 100 ft (30 m).
- Then protect persons downwind during the day: 0.2 mi (0.1 km).
- Then protect persons downwind during the night: 0.3 mi (0.5 km).
- Large spills (involving quantities greater than 52.83 gallons (200 liters)), when used as a weapon
- First isolate in all directions: 200 ft (60 m).
- Then protect persons downwind during the day: 0.3 mi (0.5 km).
- Then protect persons downwind during the night: 1.2 mi (2.0 km).
- PHYSICAL DANGERS:
- Aerosol is heavier than air. It 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.
- QNB is stable in most solvents, with a half-life of 3 to 4 weeks in moist air.
- QNB is extremely persistent in soil and water and on most surfaces.
- QNB is stable and is not degraded by heat.
- NFPA 704 Signal:
- Health: Not established/determined
- Flammability: Not established/determined
- Reactivity: Not established/determined
- Special:
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- SAMPLING AND ANALYSIS:
- OSHA: Not established/determined
- NIOSH: Not established/determined
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