GUIDE
113

Flammable Materials
(Wet/Desensitized Explosive)

• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an explosive (GUIDE 112).
• Keep material wet with water or treat as an explosive (GUIDE 112).
• Runoff to sewer may create fire or explosion hazard.

• Some are toxic and may be fatal if inhaled, ingested or absorbed through skin. Specifically, Dinitrophenol, wetted (UN1320); Dinitrophenolates, wetted (UN1321), Sodium dinitro-o-cresolate, wetted (UN1348); and Barium azide, wetted (UN1571) are known to be toxic.
• Contact may cause burns to skin and eyes.
• Fire may produce irritating, corrosive and/or toxic gases.
• Runoff from fire control or dilution water may cause environmental contamination.

• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Ventilate closed spaces before entering, but only if properly trained and equipped.

• Wear positive pressure self-contained breathing apparatus (SCBA).
• Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

• Isolate spill or leak area immediately for at least 100 meters (330 feet) in all directions.

• If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

• DO NOT fight fire when fire reaches cargo! Cargo may EXPLODE!
• Stop all traffic and clear the area for at least 1600 meters (1 mile) in all directions and let burn.
• Do not move cargo or vehicle if cargo has been exposed to heat.

• Use plenty of water - FLOOD it! If water is not available, use CO₂, dry chemical or dirt.
• If possible, and WITHOUT RISK, use unmanned master stream devices or monitor nozzles from maximum distance to prevent fire from spreading to cargo area.
• Pay special attention to tire fires as re-ignition may occur. Stand by, at a safe distance, with extinguisher ready for possible re-ignition.

• ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.
• All equipment used when handling the product must be grounded.
• Do not touch or walk through spilled material.

• Flush area with large amounts of water.

• Wet down with water and dike for later disposal.
• KEEP "WETTED" PRODUCT WET BY SLOWLY ADDING FLOODING QUANTITIES OF WATER.

ERG 2024