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P2O5Phosphorus Pentoxide (chemistry)
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The experiment initiated with the aqueous mixtures of calcium nitrate tetrahydrate [Ca[(N[O.sub.3]).sub.2] x 4[H.sub.2]O] and phosphorus pentoxide ([P.sub.2][O.sub.5]) in ethanol solution and the molar ratio of both chemicals were 10:6.
According to a study, published on 29 May by the European Sustainable Phosphorus Platform, each year the EU imports 3.4 million tonnes of P205 (phosphorus pentoxide) at a price of around 600 euro per tonne.
Analytical grade of calcium carbonate anhydrous >99% purity (Fisher Scientific, USA), aluminum oxide 99.99% (Fisher Scientific, USA), silicon dioxide 99.99% (Sigma-Aldrich, USA), phosphorus pentoxide >99% (Acros Organics, USA), and calcium fluoride >99.99% (Sigma-Aldrich, USA) were used for cements preparation (GWX 1).
It zeroes in on the manufacture of phosphate-based fertilisers, feed phosphate and high-grade phosphate rock with phosphorus pentoxide content of at least 35.7%, as well as of ammonia and nitrogen-based fertilisers.