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[2] [3] Gasoline is the most common fire accelerant used, [3] but it could also be present at a scene as an ignitable liquid due to gasoline being a common fuel. Although ignitable liquids are the most common fire accelerants, other chemicals such as propane or natural gas could also be used to accelerate a fire.
It has an explosive limit between 7.3% and 62% by volume in air, indicating a wide flammable range, which contributes to its high fire and explosion risk. With a vapor density of 2.1 (heavier than air) and a specific gravity of 1.14, nitromethane is a colorless, oily liquid that is slightly soluble in water but miscible with alcohol and ether.
Chemists distinguish an accelerant from a fuel, such as gasoline. A fire is a self-sustaining, exothermic oxidation reaction that emits heat and light. When accelerants such as oxygen-bearing liquids and gases (like NO 2) are used, fires produce more heat, consume fuel more quickly, and spread quicker. Fires involving liquid accelerants like ...
Any fuel-air mixture higher than this would be too concentrated to result in combustion. The values existing between these two limits represent the flammable or explosive range. Within this threshold, give an external ignition source, combustion of the particular fuel would likely happen.
1: Normally stable, but can become unstable at elevated temperatures and pressures (e.g., propene, ammonium acetate, carbonic acid) 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water (e.g., white phosphorus, potassium, sodium) 3
A rail repair dutchman is typically a 4–6-inch (100–150 mm) long piece of rail that is cut in advance for the purpose and carried by a section crew. If the gang finds a rail with a chipped or broken end, they remove the connector plates ( fishplates ), cut out the damaged section, replace it with the dutchman, and bolt the connectors back ...
A gas company spokesman said Reading workmen digging in the street to repair a water main had hit a gas line shortly before the explosion. [8] On Saturday, April 6, 1968, the Richmond, Indiana explosion occurred in the middle of downtown Richmond, Indiana. There were two explosions; the first was caused by a natural gas leak, while the second ...
Potassium picrate – used in some whistle compositions, safer than gallic acid but still dangerous, with heavy metals (e.g. lead) forms explosive salts; Terephthalic acid – a fuel in some smoke compositions; Hexamine – a low-reactivity, accessory fuel; Anthracene – a fuel in some smoke compositions, produces black smoke