反应条件
water in water byproducts: H4P2O7; hydrolysis; a soln. prepared at 0 °C contains after 2 h tetrametaphosphoric acid H4P4O12, triphosphoric acid H5P3O10, H3PO4, trimetaphsophoric acid H3P3O9, H4P2O7, polymer phosphoric acids and a small amount of iso-tetrametaphosphoric acid;; compounds detected by paper chromatography; content after 2 h: 75 percent H4P4O12, 15 percent H5P3O10, 5 percent H3PO4, 2-3 percent H3P3O9, 3 percent polymer phosphoric acids and 2 percent H4P2O7;;
