If it can be done safely, move undamaged containers away from the area around the fire.įIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. CAUTION: UN3342 when flooded with water will continue to evolve flammable Carbon disulfide/Carbon disulphide vapors. LARGE FIRE: DRY sand, dry chemical, soda ash or lime EXCEPT for UN1384, UN1923, UN1929 and UN3342, or withdraw from area and let fire burn. SMALL FIRE: Dry chemical, soda ash, lime or DRY sand, EXCEPT for UN1384, UN1923, UN1929 and UN3342. Smothering will not work for these materials, they do not need air to burn. CAUTION: For Xanthates, UN3342 and for Dithionite (Hydrosulfite/Hydrosulphite) UN1384, UN1923 and UN1929, USE FLOODING AMOUNTS OF WATER for SMALL AND LARGE fires to stop the reaction. Some of these materials may react violently with water. Particles can become electrostatically charged if swirled, transported by pneumatic means or poured.Įxcerpt from ERG Guide 135 :ĭO NOT USE WATER, CO2 OR FOAM ON MATERIAL ITSELF. The aluminum powder reacted with the water and other reactants leading to an explosion that killed five workers. In an industrial accident, the accidental addition of water to a solid mixture of sodium hydrosulfite and powdered aluminum caused the generation of SO2, heat and more water. The reaction with silver chloride, once started, proceeds with explosive violence. Gives a detonable mixture with liquid oxygen. React with methyl chloride in the presence of small amounts of aluminum chloride to give flammable trimethylaluminum. Three industrial explosions involving a photoflash composition containing potassium perchlorate with aluminum and magnesium powder have occurred. Mixing with chlorine trifluoride in the presence of carbon results in a violent reaction. A mixture with carbon tetrachloride exploded when heated to 153☌ and also by impact. Burns in the vapor of carbon disulfide, in sulfur dioxide, sulfur dichloride, nitrous oxide, nitric oxide, or nitrogen peroxide. Mixtures with finely divided bromates (also chlorates and iodates) of barium, calcium, magnesium, potassium, sodium or zinc can explode by heat, percussion, and friction. Heating with bismuth trioxide leads to an explosively violent reaction. A mixture with powdered ammonium persulfate and water may explode. Mixtures with ammonium nitrate are used as an explosive. Reacts with metal salts, mercury and mercury compounds, nitrates, sulfates, halogens, and halogenated hydrocarbons to form compounds that are sensitive to mechanical shock. Reacts explosively when mixed with copper oxides and heated. Reacts very exothermically when mixed with metal oxides and ignited or heated (thermite process). ALUMINUM POWDER, PYROPHORIC is a reducing agent.
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