potassium dihydrogenphosphate in water aq. CaCl2 soln;; 3 times washing with 330 ml aq. H3PO4, washing with abs. ethanol; pure; contains 0.04 mol H2O after calcination at 900.degreee.C;;
参考文献
Gmelin Handbook: Ca: MVol.B3, 225, page 1166 - 1168
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Jensen, A. T.; Rathlev, J.
J. C. Bailar, Inorganic syntheses, Bd. 4, New York-Toronto-London 1953, S. 1/218
(S)-pyrophosphoric acid in water neutralization of aq. H3PO4 (37.5-75percent) with lime milk with addn. of H4P2O7 (0-10percent relative to CaHPO4) at 60-80°C;; pptn.;
参考文献
Nippon Kagaku Kaishi (Journal of the Chemical Society of Japan), , vol. 61, p. 1729 - 1735
NH3 in neat (no solvent) reaction of free phosphorus acid with ammonia to NH4H2PO4 and reaction of superphosphate with ammonia to NH4H2PO4 and CaHPO4;;
