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P-P2O5-H3PO4-NaPO4-Ca3(PO4)2
P-P2O5-H3PO4-NaPO4-Ca3(PO4)2
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4P + 5O2 = 2P2O5P2O5 + 3H2O = 2H3PO4
H3PO4 + 3NaOH = Na3PO4 + 3H2O
2Na3PO4 + 3CaCl2 = Ca3(PO4)3 + 6NaCL