Jitka Eysseltová 0 0e+00 Ambient temperature 0 0 &deg;C 1 2.611e+01 Equation Coefficient (First) 4 2.611 1 1 1 1.0e+01 Ambient temperature 2 1.0 &deg;C 1 2.84e+01 Equation Coefficient (First) 3 2.84 1 2 1 2.0e+01 Ambient temperature 2 2.0 &deg;C 1 3.048e+01 Equation Coefficient (First) 4 3.048 1 3 1 3.0e+01 Ambient temperature 2 3.0 &deg;C 1 3.30e+01 Equation Coefficient (First) 3 3.30 1 4 1 Solubility, Solubility data series The isothermal method was used with 3.5 hours allowed for equilibration. Both liquid and solid phases were analyzed. NH<SUB>4</SUB>⁺ was determined by a distillation method¹ P<SUB>2</SUB>O<SUB>5</SUB> by the citrate method² and potasssium gravimetrically as the tetraphenylborate. The solid phase was analyzed by the Schreinemaker's method. The International Union of Pure and Applied Chemistry Kel'man, F. N.; Bruckus, E. B.; Osherovich, R. F.; Metody Analiza pri Kontrole Proizvodstva Sernoy Kisloty i Fosfornykh Udobreniy, Goskhimizdat, Moscow (1963). book Syromyatnikova, M. N.; Torocheshnikov, A. B.; Kuznetsova, Zh. Prikl. Khim. 52, 568 (1979). paper 7783-28-0 1 (NH4)2HPO4 InChI=1S/2H3N.H3O4P/c;;1-5(2,3)4/h2*1H3;(H3,1,2,3,4) MNNHAPBLZZVQHP-UHFFFAOYSA-N 132.056 Diammonium hydrogenphosphate No information is given. 506-87-6 2 (NH4)2CO3 InChI=1S/CH2O3.2H3N/c2-1(3)4;;/h(H2,2,3,4);2*1H3 PRKQVKDSMLBJBJ-UHFFFAOYSA-N 96.0858 Ammonium carbonate 7758-11-4 3 K2HPO4 InChI=1S/2K.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2 ZPWVASYFFYYZEW-UHFFFAOYSA-L 174.176 Dipotassium hydrogenphosphate 584-08-7 4 K2CO3 InChI=1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2 BWHMMNNQKKPAPP-UHFFFAOYSA-L 138.206 Dipotassium carbonate 7732-18-5 5 H2O InChI=1S/H2O/h1H2 XLYOFNOQVPJJNP-UHFFFAOYSA-N 18.0153 Water Diammonium hydrogenphosphate with Diammonium carbonate, Dipotassium hydrogenphosphate, Dipotassium carbonate and Water