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Related to pyrophoric: Pyrophoric iron, Organic peroxide


1. Spontaneously igniting in air.
2. Producing sparks by friction.

[From pyrophorus, substance that ignites spontaneously : from Greek purophoros, fire-bearing : puro-, pyro- + -phoros, -phorous.]


(ˌpaɪrəʊˈfɒrɪk) or


1. (Chemistry) (of a chemical) igniting spontaneously on contact with air
2. (General Physics) (of an alloy) producing sparks when struck or scraped: lighter flints are made of pyrophoric alloy.
[C19: from New Latin pyrophorus, from Greek purophoros fire-bearing, from pur fire + pherein to bear]


(ˌpaɪ rəˈfɔr ɪk, -ˈfɒr-)

capable of igniting spontaneously in air.
[1830–40; < Greek pyrophór(os) fire-bearing]
References in periodicals archive ?
Fire Investigator Mark Whitaker said: "It's called pyrophoric action and is a rare thing, but it's not impossible.
Tenders are invited for Supply of industrial cleaner/degreaser, brand-lps precision clean concentrate or equivalent with the following specification: biodegradable,alkaline, nonflammable,chemicalstabilty during storage,shall not react with pyrophoric zircaloy,non toxic,disposal of used solution by further diluting with water.
This was done in a nitrogen filled glove box due to the pyrophoric nature of TBP.
It was determined that R-40 was very chemically reactive with aluminum inside the refrigeration system and produced a violent reaction forming toxic and reactive compounds, some of which could be pyrophoric (spontaneously combust in the presence of air).
Although the range of chemistries is too great to list, OTI's core chemistries specialise in degassing and decontamination, including LEL's, H2S, pyrophoric scale, heavy hydrocarbons, grease, and odours.
One drawback of CVD and ALD is that many of the precursors tend to be either pyrophoric or flammable and may be sensitive to air or water.
A chemical energy source (pyrotechnic or pyrophoric in nature) is used to provide the required IR radiation.
Another initiative is the pyrophoric waste management process through which RasGas has not only completely eliminated pyrophoric fires, but has been able to incinerate hazardous pyrophoric waste in a controlled manner allowing the company to double the amount of steel it recycles.
2004)--increases the reactivity towards oxidation, often to the point of being pyrophoric (Amonette and Joseph 2009).
These gases are considered extremely hazardous, highly toxic, or pyrophoric (meaning they combust as soon as they hit the air).
The products are also pyrophoric - they catch fire when exposed to air - meaning they have to be stored very carefully and transported by sea to key markets such as Japan and Taiwan.