Tendency of a chemical compound to ignite in open air
Not to be confused with Porphyria or Porphyriticity.
"Pyrophorus" redirects here. For the bioluminescent beetle genus, see Pyrophorus (beetle).
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A substance is pyrophoric (from Greek: πυροφόρος, pyrophoros, 'fire-bearing') if it ignites spontaneously in air at or below 54 °C (129 °F) (for gases) or within 5 minutes after coming into contact with air (for liquids and solids).[1] Examples are organolithium compounds and triethylborane. Pyrophoric materials are often water-reactive as well and will ignite when they contact water or humid air. They can be handled safely in atmospheres of argon or (with a few exceptions) nitrogen. Class D fire extinguishers are designated for use in fires involving pyrophoric materials. A related concept is hypergolicity, in which two compounds spontaneously ignite when mixed.
creation of sparks from metals is based on the pyrophoricity of small metal particles, and pyrophoric alloys are made for this purpose. Practical applications...
formula Al2(C2H5)6 (abbreviated as Al2Et6 or TEA). This colorless liquid is pyrophoric. It is an industrially important compound, closely related to trimethylaluminium...
MR-1018/7-OSD. Chapter: "PYROPHORIC METALS: Uranium". Archived from the original on 7 March 2008. in Primer on Spontaneous Heating and Pyrophoricity. DOE Handbook...
the long term safety of depleted uranium exists, including claims of pyrophoric, genotoxic, and teratogenic heavy metal effects. Many have cited its use...
autoignition. It is distinct from (but has similar practical effects to) pyrophoricity, in which a compound needs no self-heat to ignite. The correct storage...
moisture and to the catalytic effects of container surfaces causes its pyrophoricity. Above 420 °C, silane decomposes into silicon and hydrogen; it can therefore...
chemical compound with the formula B2H6. It is a toxic, colorless, and pyrophoric gas with a repulsively sweet odor. Given its simple formula, borane is...
tools). Aluminium is used because of its corrosion resistance, non-pyrophoricity, and mechanical strength. The great majority (about 90%) of aluminium...
temperature, the coolant does not solidify in the pipes. In this case, the pyrophoricity of potassium requires extra precautions to prevent and detect leaks...
PMC 5485009. PMID 28371148. "Primer on Spontaneous Heating and Pyrophoricity – Pyrophoric Metals – Plutonium". Washington (DC): U.S. Department of Energy...
chemically inert in the air. Finely powdered lead, as with many metals, is pyrophoric, and burns with a bluish-white flame. Fluorine reacts with lead at room...
often mistaken for napalm [citation needed], is in fact TPA (thickened pyrophoric agent). TPA is triethylaluminum (TEA) thickened with polyisobutylene,...
Ferrocerium (also known in Europe as Auermetall) is a synthetic pyrophoric alloy of mischmetal (cerium, lanthanum, neodymium, other trace lanthanides and...
simplest arsenic compounds is the trihydride, the highly toxic, flammable, pyrophoric arsine (AsH3). This compound is generally regarded as stable, since at...
as Al2Me6 or TMA), as it exists as a dimer. This colorless liquid is pyrophoric. It is an industrially important compound, closely related to triethylaluminium...
9 September 2005. Lyman, Robert M.; Volkmer, John E. (March 2001). "Pyrophoricity (spontaneous combustion) of Powder River Basin coals: Considerations...
angle in order to cleave or shave off small particles of metal. The pyrophoricity of the steel results in the shavings oxidising in the air. The molten...
also called yellow phosphorus. White phosphorus is highly flammable and pyrophoric (self-igniting) in air; it faintly glows green and blue in the dark when...
readily (e.g., gasoline, acetylene, propane, hydrogen gas, diborane). Includes pyrophoric substances. Flash point below room temperature at 22.8 °C (73 °F)....
of iron. Iron is by far the most reactive element in its group; it is pyrophoric when finely divided and dissolves easily in dilute acids, giving Fe2+...
solution form. These reagents are highly reactive, and are sometimes pyrophoric. Like its inorganic compounds, almost all organic compounds of lithium...
ignite in a normal atmosphere at naturally ambient temperatures are termed pyrophoric. Autoignition temperatures of liquid chemicals are typically measured...
Kidōtai: Arise - Alternative Architecture. An additional fifth OVA titled Pyrophoric Cult, originally premiering in the Alternative Architecture broadcast...
Every Merlin engine produces 854 kN (192,000 lbf) of thrust. They use a pyrophoric mixture of triethylaluminum-triethylborane (TEA-TEB) as an engine igniter...
KC36, KC48 and finally KC60. KC8 is a very strong reducing agent and is pyrophoric and explodes on contact with water. While the larger alkali metals (K...
/ PYROKYL is a specialty variation of sodium bicarbonate for fighting pyrophoric (ignites on contact with air) liquid fires. In addition to sodium bicarbonate...
Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily...
color with the formation of the oxide. Finely powdered strontium metal is pyrophoric, meaning that it will ignite spontaneously in air at room temperature...
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