phosphorus pentoxide


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phos·pho·rus pen·tox·ide

a corrosive compound, P2O5; the ultimate anhydride of orthophosphoric acid; a drying and dehydrating agent.
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That's why change of the slag basicity in the direction of increase in it of Si[O.sub.2] content causes transition of phosphorus from the slag into the metal, because at high temperature Si[O.sub.2] displaces from 4CaO x [P.sub.2][O.sub.5] phosphorus pentoxide with formation of the silicate (4CaO x [P.sub.2][O.sub.5] + Si[O.sub.2] (r) [P.sub.2][O.sub.5] + + 4CaO x Si[O.sub.2]), and phosphorus of the anhydride is reduced by carbon or iron at slag-metal interface due to which it transits into the metal.
The two-stage, heavy medium separation will be used for producing a low-cost acceptable quality concentrate of greater than 30% phosphorus pentoxide ([P.sub.2][O.sub.5]).
The percentage of available nitrogen (N), phosphorus pentoxide ([P.sub.2] [O.sub.5]), and potassium oxide ([K.sub.2] O) in fertilizer determines its commercial value.
This is followed by other important derivitavies such as industrial phosphates, phosphoric acid, phosphorus chloride, phosphorus pentasulfide and phosphorus pentoxide.