IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ammonia with Phosphoric acid and Water

Components:
   (1) Ammonia; NH3; [7664-41-7]  NIST Chemistry WebBook for detail
   (2) Phosphoric acid; H3PO4; [7664-38-2]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Jänecke, E., Z. Phys. Chem. 1927, 127, 71.

Variables:

   Concentration = Composition at 273 K and 298 K.

Prepared By:
   J. Eysseltová

Experimental Data:   (Notes on the Nomenclature)
(Please see footnotes following the table(s).)

Solubility in the NH₃-H₃PO₄-H₂O system.
t/°C	Chemical₁	Mass Fraction w₁^(a)	Chemical₂	Mass Fraction w₂^(a)	Chemical₃	Mass Fraction w₃^(a)	Chemical₄	10² * Mass Fraction w₄^(b)	m₄ [mol/kg]^(b)	Chemical₅	10² * Mass Fraction w₅^(b)	m₅ [mol/kg]	Chemical₆	10² * Mass Fraction w₆^(b)
0	NH3	24.0	P2O5	76.0	H2O	326	NH3	5.63	4.74	H3PO4	24.6	3.60	H2O	69.7
0	NH3	65.0c	P2O5	34.5c	H2O	2110	NH3	2.94	1.82	H3PO4	2.16	0.232	H2O	94.9
0	NH3	68.0	P2O5	32.0	H2O	2075	NH3	3.13	1.94	H3PO4	2.03	0.219	H2O	94.8
0	NH3	42.0	P2O5	58.0	H2O	1440	NH3	2.73	1.74	H3PO4	5.20	0.576	H2O	92.1
0	NH3	86.1	P2O5	19.9	H2O	1480	NH3	5.43	3.43	H3PO4	1.73	0.190	H2O	92.8
0	NH3	75.0	P2O5	25.0	H2O	1870	NH3	3.81	2.37	H3PO4	1.75	0.189	H2O	94.4
0	NH3	92.2	P2O5	7.80	H2O	1090	NH3	7.75	4.98	H3PO4	0.905	0.101	H2O	91.3
0	NH3	55.7	P2O5	44.3	H2O	1990	NH3	2.67	1.66	H3PO4	2.93	0.316	H2O	94.4
0	NH3	34.0	P2O5	66.0	H2O	659	NH3	4.48	3.15	H3PO4	12.0	1.47	H2O	83.5
0	NH3	31.0	P2O5	69.0	H2O	257	NH3	8.68	7.89	H3PO4	26.7	4.21	H2O	64.6
0	NH3	26.0	P2O5	74.0	H2O	210	NH3	8.39	8.40	H3PO4	33.0	5.73	H2O	58.7
0	NH3	19.2	P2O5	80.8	H2O	486	NH3	3.28	2.48	H3PO4	19.0	2.50	H2O	77.7
0	NH3	24.5	P2O5	75.5	H2O	315	NH3	5.90	5.03	H3PO4	25.1	3.72	H2O	69.0
0	NH3	6.00	P2O5	94.0	H2O	65.8	NH3	3.62	11.7	H3PO4	78.3	44.1	H2O	18.1
25	NH3	95.3	P2O5	4.70	H2O	563	NH3	14.4	9.97	H3PO4	0.979	0.118	H2O	84.6
25	NH3	85.8	P2O5	14.2	H2O	881	NH3	8.75	5.75	H3PO4	2.00	0.228	H2O	89.3
25	NH3	60.7	P2O5	39.3	H2O	1090	NH3	5.10	3.32	H3PO4	4.56	0.515	H2O	90.3
25	NH3	41.5	P2O5	58.5	H2O	705	NH3	5.16	3.57	H3PO4	10.0	1.21	H2O	84.8
25	NH3	32.5	P2O5	67.5	H2O	222	NH3	10.1	9.72	H3PO4	28.9	4.84	H2O	61.0
25	NH3	27.2	P2O5	72.8	H2O	127	NH3	12.0	16.1	H3PO4	44.3	10.3	H2O	43.7
25	NH3	22.5	P2O5	77.5	H2O	92.2	NH3	11.7	21.1	H3PO4	55.7	17.4	H2O	32.6
25	NH3	20.1	P2O5	79.9	H2O	333	NH3	4.64	3.90	H3PO4	25.5	3.72	H2O	69.9
25	NH3	12.6	P2O5	87.4	H2O	232	NH3	3.80	3.72	H3PO4	36.3	6.20	H2O	59.9
25	NH3	8.60	P2O5	91.4	H2O	63.7	NH3	5.25	17.5	H3PO4	77.1	44.6	H2O	17.7

Notes:
   Table 1  ^a  The composition unit is: g/100 g (NH₃ + P₂O₅).
   Table 1  ^b  These values were calculated by the compiler.
   Table 1  ^c  This is the only solution for which the total amount of (NH₃ + P₂O₅) is not equal to 100. At least one of these values is likely to be in error.

Method/Apparatus/Procedure:
   No information is given.

Source and Purity of Materials:
   No information is given.

Estimated Errors:
   Solubility: No information is given.
   Temperature: No information is given.