A pyrophoric substance (from Greek purophoros, "fire-bearing") will ignite spontaneously.
Pyrophoric scale is a material that can be burnt or ignited spontaneously when in contact with air, if struck or scratched.
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The first meaning of a word is referred to as "denotative meaning". This is the dictionary definition. The second meaning of a word is referred to as "connotative meaning". This is not in the dictionary.
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Pyrophoric scale is a material that can be burnt or ignited spontaneously when in contact with air, if struck or scratched.
Plutonium does not have a flammability in the traditional sense, as it does not catch fire easily. However, if plutonium is ignited, it can react with oxygen in the air to form oxides that are pyrophoric, meaning they can spontaneously ignite in air. Therefore, handling plutonium requires special precautions to prevent accidental ignition.
Neptunium as a powder is pyrophoric.
Fine powders of hafnium are pyrophoric.
Plutonium is pyrophoric as a fine powder.
self heating or pyrophoric materials
A material that will spontaneously ignite and burn when exposed to air is called pyrophoric. Pyrophoric materials are highly reactive and can pose fire hazards if not handled properly.
self-heating or pyrophoric materials
Any special precautions; but hafnium as a a fine powder can be pyrophoric.
Uranium in powdered form is very pyrophoric.
Uranium is easily oxidized by oxygen.In powdered form is pyrophoric.
Usually this requires isolating the susbtance from the atmosphere. This usually entails keeping the substance under an under atmosphere, such as in a sealed container of argon. White phosphorus, unlike many other pyrophoric substances, may be stored underwater.