NIST-IUPAC Solubility Data Series

Ammonia with Phosphoric acid and Water (IUPAC SDS Volume 66)

SDS Volume

Volume 66. Ammonium Phosphates, p None

Source Publication

Parker, E. G.; J. Phys. Chem. 1914, 18, 653.

Conditions:

Room Temp: Composition at 25 °C

Compiler:

J. Eysseltová

Methodology:

Bottles containing mixtures of ammonia and orthophosphoric acid and in contact with a solid phase were allowed to rotate in a thermostat until equilibrium was established. Ammonia and phosphorus were determined by methods described elsewhere [1].

Sample Information:

No information is given.

Methodology Citation

¹ Treadwell, F. P.; Hall, W. T.; Analytical Chemistry, Vol II, 59, 434 (1913).

System Components:

Ammonia, $\ce{ NH3 }$; [7664-41-7] NIST WebBook
Phosphoric acid, $\ce{ H3PO4 }$; [7664-38-2] NIST WebBook
Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook

Experimental Data

100w₃	100w₄	100w₅	m₁ (mol/kg) ^b	m₂ (mol/kg) ^b	m₃ (mol/kg) ^a	m₄ (mol/kg) ^a	Phase (s) () ^c
4.72^a	61.57^a	33.72^a	2.77	6.09	8.22	18.63	A
4.68	55.00	40.32	2.75	5.44	6.82	13.92	A
4.26	46.60	49.14	2.50	4.61	5.09	9.68	A
4.09	36.60	59.32	2.40	3.62	4.05	6.30	A
4.17	26.69	69.14	2.45	2.64	3.54	3.94	A
4.39	25.98	69.62	2.58	2.57	3.71	3.81	A
4.39	26.99	68.61	2.58	2.67	3.76	4.01	A
6.88	33.36	59.76	4.04	3.30	6.76	5.70	A
8.91	38.11	52.98	5.23	3.77	9.87	7.34	A
12.28	48.02	39.70	7.21	4.75	18.16	12.34	A
12.43	48.12	39.45	7.30	4.76	18.51	12.45	B
11.94	44.28	43.78	7.01	4.38	16.01	10.32	B
11.75	39.93	48.32	6.90	3.95	14.28	8.43	B
10.68	34.47	54.85	6.27	3.41	11.43	6.41	C
7.29	25.98	66.73	4.28	2.57	6.41	3.97	C
7.14	18.50	74.36	4.19	1.83	5.63	2.54	C
11.22	13.45	75.33	6.59	1.33	8.75	1.82	C
14.90	8.80	76.30	8.75	0.87	11.47	1.18	C
19.55	4.35	76.10	11.48	0.43	15.08	0.58	C
23.98	4.14	71.88	14.08	0.41	19.59	0.59	C

(a) All these values were calculated by the compiler

(b) The compositions unit is: mol/1000 g of the solution.

IUPAC-NIST Solubility Data Series, SRD 106