Phosphine

CAS RN: 7803-51-2
UN/NA: 2199

Reactivities / Incompatibilities

Incompatible materials: Strong oxidizing agents, oxidizing agents, halogens, nitric acid.
Combines violently with oxygen and the halogens. Liberates hydrogen and forms the phosphide when passed over heated metal. Forms phosphonium salts when brought in contact with the halogen acids.
Explosive reaction with dichlorine oxide, silver nitrate, concentrated nitric acid, nitrogen trichloride, oxygen. Reacts with mercury(II) nitrate to form an explosive product. Ignition or violent reaction with air, boron trichloride, /bromine/, /chlorine/ aqueous halogen solutions, iodine, metal nitrates, /nitric oxide, nitrogen trichloride, nitrate, nitrous oxide, nitrous acid, potassium + ammonia/, oxidants. The organic derivatives of phosphine (phosphines) react vigorously with halogens.
Air, oxidizers, chlorine, acids, moisture, halogenated hydrocarbons, copper [Note: May ignite SPONTANEOUSLY on contact with air].
Phosphine, generated by action of water on calcium phosphide, was dried by passage through towers packed with the latter. Soon after refilling the generator (but not the towers) and starting purging with argon, a violent explosion occurred. This was attributed to the air, displaced from the generator by argon, reacting explosively with dry phosphine present in the drying towers, possibly catalyzed by the orange-yellow polyphosphine formed on the surface of calcium phosphide. Fresh calcium phosphide in both generator and drying towers, with separate purging, is recommended.
The presence of traces (0.2%) of diphosphane in phosphine as normally prepared causes it to ignite spontaneously in air, even at below -15 deg C ... Phosphine, generated by action of the alkali on phosphonium iodide, was shown to be pure by mass spectrometry. During a second prepn, an air leak developed during cold-trap transfer and an explosion occurred. Presence of diphosphane was suspected.
Interaction /between phosphine and boron trichloride/ is energetic.
The heat sensitivity ... may explain the explosions which occur on contact of many readily oxidizable materials /eg, phosphine/ with the powerful oxidant dichlorine oxide ...
Ignition /of phosphine/ occurs on contact with chlorine or bromine or their aq soln.
Passage of phosphine into silver nitrate soln causes ignition or explosion, depending on the gas rate. Mercury(II) nitrate soln gives a complex phosphide, explosive when dry.
... /Phosphine/ will initiate the violent and often explosive decomp of nitrogen trichloride.
Even small amt of oxygen present in phosphine give an explosive mixture, in which autoignition occurs at low pressures ...
Boron trichloride reacts energetically with ... phosphine.
Phosphine ignites with bromine or chlorine at room temperature.
Chlorine monoxide explodes on contact with phosphine.
The reaction of ... /phosphine and mercuric nitrate/ gives a yellow precipitate which explodes when heated or subjected to shock.
Phosphine is violently decomposed by concentrated nitric acid, and flame is produced. Warm fuming nitric acid, dropped in a container of phosphine gas, produces an explosion.
Phosphine plus nitric oxide can be ignited by the addition of oxygen.
Nitrogen trichloride explodes on contact with ... phosphine ... .
Phosphine gas ignites spontaneously if a trace of nitrogen trioxide is added.
Phosphine gas ignites spontaneously if a trace of nitrous acid is added.
/The reaction between phosphine and oxygen/ is explosive at ordinary temperatures.
Potassium and phosphine react in liquid ammonia to form potassium dihydrophosphide, a spontaneously flammable solid.
An explosion occurred when purified phosphine was passed rapidly into a concentrated solution of silver nitrate.
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