IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ammonia with Phosphoric acid, Calcium oxide and Water

Components:
   (1) Ammonia; NH3; [7664-41-7]  NIST Chemistry WebBook for detail
   (2) Calcium oxide; CaO; [1305-78-8]  NIST Chemistry WebBook for detail
   (3) Phosphoric acid; H3PO4; [7664-38-2]  NIST Chemistry WebBook for detail
   (4) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Flatt, R.; Brunisholz, G.; Dagon, R., Helv. Chim. Acta 1961, 44, 2173.

Variables:

   Concentration = Composition at 0 ºC and 50 ºC

Prepared By:
   J. Eysseltová

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

Table I. Invariant solutions in the (NH₄)₃PO₄-Ca₃(PO₄)₂-H₃PO₄-H₂O system.
Solution number	t/°C	Chemical₁	Solubility₁ [eq %]	Chemical₂	Solubility₂ [eq %]	Chemical₃	Solubility₃ [eq %]	Chemical₄	Mole Fraction₄^(a)	Solid Phase(s)^(b)
1	0	Ca2+	9.1	NH4+	11.1	H+	79.8	H2O	214	A + B + C
2	0	Ca2+	9.1	NH4+	11.1	H+	79.8	H2O	215	A + B + C
3	0	Ca2+	21.8	NH4+	3.6	H+	74.6	H2O	389	A + C + D
4	0	Ca2+	21.9	NH4+	3.5	H+	74.6	H2O	391	A + C + D
5	0	Ca2+	12.4	NH4+	16.4	H+	71.2	H2O	436	B + C + D
6 (c)	50	Ca2+	4.1	NH4+	16.1	H+	79.8	H2O	92.6	A + B + C
7	50	Ca2+	4.0	NH4+	16.0	H+	80.0	H2O	93.0	A + B + C
8	50	Ca2+	7.5	NH4+	12.9	H+	79.6	H2O	141	A + C + D
9	50	Ca2+	4.8	NH4+	17.1	H+	78.1	H2O	114	B + C + D
10	50	Ca2+	4.9	NH4+	17.1	H+	78.0	H2O	115	B + C + D

Table II. Solutions coexisting with two solid phases in the (NH₄)₃PO₄-Ca₃(PO₄)₂-H₃PO₄-H₂O system.
Solution number	t/°C	Chemical₁	Solubility₁ [eq %]	Chemical₂	Solubility₂ [eq %]	Chemical₃	Solubility₃ [eq %]	Chemical₄	Mole Fraction₄^(a)	Solid Phase(s)^(b)
11	0	Ca3+	2.2	NH4+	10.8	H+	87.0	H2O	114	A + B
12	0	Ca3+	2.4	NH4+	10.8	H+	86.8	H2O	118	"
13	0	Ca3+	5.6	NH4+	10.9	H+	83.5	H2O	170	"
14	0	Ca3+	8.1	NH4+	10.9	H+	81.0	H2O	200	"
15	0	Ca3+	8.8	NH4+	11.0	H+	80.2	H2O	211	"
16	0	Ca3+	11.5	NH4+	9.4	H+	79.1	H2O	249	A + C
17	0	Ca3+	15.1	NH4+	7.1	H+	77.8	H2O	304	"
18	0	Ca3+	21.3	NH4+	3.8	H+	74.9	H2O	381	"
19	0	Ca3+	24.1	NH4+	1.2	H+	74.7	H2O	427	A + D
20	0	Ca3+	9.6	NH4+	11.1	H+	79.3	H2O	225	B + C
21	0	Ca3+	10.6	NH4+	11.8	H+	77.6	H2O	255	"
22	0	Ca3+	11.7	NH4+	12.8	H+	75.5	H2O	305	"
23	0	Ca3+	11.9	NH4+	13.4	H+	74.7	H2O	323	"
24	0	Ca3+	12.3	NH4+	14.3	H+	73.4	H2O	362	"
25	0	Ca3+	12.4	NH4+	15.8	H+	71.8	H2O	416	"
26	0	Ca3+	12.4	NH4+	16.0	H+	71.6	H2O	426	"
27	0	Ca3+	3.0	NH4+	29.6	H+	67.4	H2O	825	B + D
28	0	Ca3+	7.0	NH4+	24.1	H+	68.9	H2O	666	"
29	0	Ca3+	9.6	NH4+	20.6	H+	70.0	H2O	555	"
30	0	Ca3+	14.8	NH4+	13.0	H+	72.2	H2O	435	C + D
31	0	Ca3+	17.2	NH4+	10.1	H+	72.7	H2O	433	"
32	0	Ca3+	17.5	NH4+	9.6	H+	72.9	H2O	443	"
33	0	Ca3+	19.2	NH4+	7.4	H+	73.4	H2O	434	"
34	0	Ca3+	19.9	NH4+	6.0	H+	74.1	H2O	408	"
35	0	Ca3+	20.0	NH4+	5.9	H+	74.1	H2O	403	"
36	50	Ca3+	0.9	NH4+	14.4	H+	84.7	H2O	37.7	A + B
37	50	Ca3+	1.5	NH4+	14.8	H+	83.7	H2O	53.3	"
38	50	Ca3+	2.4	NH4+	15.2	H+	82.3	H2O	69.5	"
39	50	Ca3+	3.4	NH4+	15.6	H+	81.0	H2O	82.8	"
40	50	Ca3+	4.1	NH4+	15.9	H+	80.0	H2O	92.9	"
41	50	Ca3+	3.9	NH4+	15.9	H+	80.2	H2O	90.2	"
42	50	Ca3+	4.7	NH4+	15.3	H+	80.0	H2O	101	A + C
43	50	Ca3+	5.7	NH4+	13.7	H+	80.6	H2O	132	"
44	50	Ca3+	6.1	NH4+	14.2	H+	79.7	H2O	121	"
45	50	Ca3+	6.8	NH4+	13.5	H+	79.7	H2O	131	"
46	50	Ca3+	7.3	NH4+	13.1	H+	79.6	H2O	139	"
47	50	Ca3+	7.7	NH4+	12.9	H+	79.4	H2O	142	"
48	50	Ca3+	8.1	NH4+	11.5	H+	80.4	H2O	160	A + D
49	50	Ca3+	8.8	NH4+	10.3	H+	80.9	H2O	160	"
50	50	Ca3+	10.3	NH4+	8.4	H+	81.3	H2O	178	"
51	50	Ca3+	11.3	NH4+	6.9	H+	81.8	H2O	196	"
52	50	Ca3+	12.1	NH4+	5.6	H+	82.3	H2O	205	"
53	50	Ca3+	13.0	NH4+	4.4	H+	82.6	H2O	214	"
54	50	Ca3+	14.7	NH4+	2.2	H+	83.1	H2O	234	"
55	50	Ca3+	16.5	NH4+	0.0	H+	83.5	H2O	253	"
56	50	Ca3+	4.2	NH4+	16.1	H+	79.7	H2O	96.8	B + C
57	50	Ca3+	4.2	NH4+	16.1	H+	79.7	H2O	97.0	"
58	50	Ca3+	4.5	NH4+	16.4	H+	79.1	H2O	103	"
59	50	Ca3+	4.8	NH4+	16.9	H+	78.3	H2O	111	"
60	50	Ca3+	5.1	NH4+	17.4	H+	77.5	H2O	120	"
61	50	Ca3+	5.2	NH4+	17.7	H+	77.1	H2O	125	"
62	50	Ca3+	5.6	NH4+	18.6	H+	75.8	H2O	141	"
63	50	Ca3+	0.5	NH4+	32.4	H+	67.1	H2O	302	B + D
64	50	Ca3+	1.1	NH4+	30.2	H+	68.7	H2O	284	"
65	50	Ca3+	2.0	NH4+	27.1	H+	70.9	H2O	246	"
66	50	Ca3+	2.9	NH4+	24.1	H+	73.0	H2O	206	"
67	50	Ca3+	3.8	NH4+	21.1	H+	75.1	H2O	169	"
68	50	Ca3+	3.9	NH4+	20.7	H+	75.4	H2O	165	"
69	50	Ca3+	4.3	NH4+	18.7	H+	77.0	H2O	136	"
70	50	Ca3+	5.4	NH4+	15.8	H+	78.8	H2O	121	C + D
71	50	Ca3+	6.0	NH4+	15.0	H+	79.0	H2O	122	"

Table III. Saturated solutions in equilibrium with one solid phase in the (NH₄)₃PO₄-Ca₃(PO₄)₂-H₃PO₄-H₂O system.
Solution number	t/°C	Chemical₁	Solubility₁ [eq %]	Chemical₂	Solubility₂ [eq %]	Chemical₃	Solubility₃ [eq %]	Chemical₄	Mole Fraction₄^(a)	Solid Phase(s)^(b)
72	0	Ca2+	1.3	NH4+	4.9	H+	93.8	H2O	99	A
73	0	Ca2+	3.9	NH4+	4.8	H+	91.3	H2O	149	"
74	0	Ca2+	6.1	NH4+	5.5	H+	88.4	H2O	181	"
75	0	Ca2+	7.4	NH4+	4.8	H+	87.8	H2O	200	"
76	0	Ca2+	10.8	NH4+	4.6	H+	84.6	H2O	242	"
77	0	Ca2+	11.0	NH4+	2.4	H+	86.6	H2O	243	"
78	0	Ca2+	12.7	NH4+	5.9	H+	81.4	H2O	266	"
79	0	Ca2+	12.7	NH4+	2.2	H+	85.1	H2O	269	"
80	0	Ca2+	15.0	NH4+	6.9	H+	78.1	H2O	296	"
81	0	Ca2+	15.4	NH4+	6.6	H+	78.0	H2O	305	"
82	0	Ca2+	16.0	NH4+	5.5	H+	78.5	H2O	309	"
83	0	Ca2+	16.7	NH4+	5.5	H+	77.8	H2O	321	"
84	0	Ca2+	17.5	NH4+	2.6	H+	79.9	H2O	328	"
85	0	Ca2+	18.9	NH4+	0.2	H+	80.9	H2O	350	"
86	0	Ca2+	1.4	NH4+	28.5	H+	70.1	H2O	777	B
87	0	Ca2+	1.8	NH4+	23.9	H+	74.3	H2O	598	"
88	0	Ca2+	2.7	NH4+	26.0	H+	71.3	H2O	689	"
89	0	Ca2+	5.7	NH4+	23.1	H+	71.2	H2O	618	"
90	0	Ca2+	6.1	NH4+	14.6	H+	79.3	H2O	304	"
91	0	Ca2+	7.2	NH4+	16.9	H+	75.9	H2O	408	"
92	0	Ca2+	8.2	NH4+	12.7	H+	79.1	H2O	262	"
93	0	Ca2+	14.0	NH4+	10.2	H+	75.8	H2O	330	C
94	0	Ca2+	15.8	NH4+	12.1	H+	72.1	H2O	453	D
95	50	Ca2+	1.0	NH4+	4.0	H+	95.0	H2O	51.8	A
96	50	Ca2+	1.1	NH4+	9.9	H+	89.0	H2O	52.5	"
97	50	Ca2+	3.6	NH4+	5.1	H+	91.3	H2O	102	"
98	50	Ca2+	3.6	NH4+	10.0	H+	86.4	H2O	102	"
99	50	Ca2+	4.7	NH4+	14.9	H+	80.4	H2O	109	"
100	50	Ca2+	7.2	NH4+	4.8	H+	88.0	H2O	150	"
101	50	Ca2+	7.3	NH4+	9.7	H+	83.0	H2O	148	"
102	50	Ca2+	8.0	NH4+	12.5	H+	79.5	H2O	145	"
103	50	Ca2+	9.2	NH4+	9.7	H+	81.1	H2O	163	"
104	50	Ca2+	11.1	NH4+	4.9	H+	84.0	H2O	194	"
105	50	Ca2+	15.2	NH4+	1.0	H+	83.8	H2O	238	"
106	50	Ca2+	0.9	NH4+	17.2	H+	81.9	H2O	97	B
107	50	Ca2+	0.9	NH4+	20.8	H+	78.2	H2O	152	"
108	50	Ca2+	1.5	NH4+	24.1	H+	74.4	H2O	202	"
109	50	Ca2+	2.8	NH4+	17.5	H+	79.7	H2O	111	"
110	50	Ca2+	3.2	NH4+	19.6	H+	77.2	H2O	146	"
111	50	Ca2+	6.4	NH4+	13.9	H+	79.7	H2O	128	C
112	50	Ca2+	5.6	NH4+	16.1	H+	78.3	H2O	145	D

Table IV. Summary of the invariant points in the (NH₄)₃PO₄-Ca₃(PO₄)₂-H₂O system.
Solution number	t/°C	Chemical₁	Solubility₁ [eq %]	Chemical₂	Solubility₂ [eq %]	Chemical₃	Solubility₃ [eq %]	Chemical₄	Mole Fraction₄^(a)	Solid Phase(s)^(b)
113	0	Ca2+	---	NH4+	---	H+	100.0	H2O	48.4	E
114	0	Ca2+	---	NH4+	7.3	H+	92.7	H2O	18.0	E + F
115	0	Ca2+	---	NH4+	7.7	H+	92.3	H2O	25.8	F + G
116	0	Ca2+	---	NH4+	11.1	H+	88.9	H2O	76.5	B + G
117	0	Ca2+	---	NH4+	33.3	H+	66.7	H2O	925	B
118	0	Ca2+	25.1	NH4+	---	H+	74.9	H2O	452	A + D
119	0	Ca2+	0.2	NH4+	---	H+	99.8	H2O	48.4	A + E
120	0	Ca2+	traces	NH4+	7.3	H+	92.7	H2O	18	A + E + F
121	0	Ca2+	traces	NH4+	7.7	H+	92.3	H2O	26	A + F + G
122	0	Ca2+	1.0	NH4+	10.8	H+	88.2	H2O	76	A + B + G
123	0	Ca2+	9.1	NH4+	11.1	H+	79.8	H2O	215	A + B + C
124	0	Ca2+	21.9	NH4+	3.5	H+	74.6	H2O	390	A + C + D
125	0	Ca2+	12.4	NH4+	16.4	H+	71.2	H2O	436	A + B + D
126	50	Ca2+	---	NH4+	33.3	H+	66.7	H2O	313	B
127	50	Ca2+	16.5	NH4+	---	H+	83.5	H2O	253	A + D
128	50	Ca2+	4.0	NH4+	16.0	H+	80.0	H2O	92.8	A + B + C
129	50	Ca2+	7.5	NH4+	12.9	H+	79.6	H2O	141	A + C + D
130	50	Ca2+	4.8	NH4+	17.1	H+	78.1	H2O	115	B + C + D

Part 2. The compiler has recalculated the aboce data to give the following values.
Solution number	Chemical₁	10² * Mass Fraction w₁	m₁ [mol/kg]	Chemical₂	10² * Mass Fraction w₂	m₂ [mol/kg]	Chemical₃	10² * Mass Fraction w₃	m₃ [mol/kg]	Chemical₄	10² * Mass Fraction w₄
1	CaO	3.4	1.2	NH3	2.53	2.95	H3PO4	43.7	8.86	H2O	50.4
2	CaO	3.4	1.2	NH3	2.52	2.94	H3PO4	43.6	8.82	H2O	50.5
3	CaO	5.68	1.60	NH3	0.57	0.53	H3PO4	30.4	4.90	H2O	63.3
4	CaO	5.69	1.60	NH3	0.55	0.51	H3PO4	30.3	4.87	H2O	63.5
5	CaO	2.99	0.802	NH3	2.40	2.12	H3PO4	28.1	4.31	H2O	66.5
6	CaO	2.2	1.3	NH3	5.20	9.96	H3PO4	62.0	20.6	H2O	30.6
7	CaO	2.1	1.2	NH3	5.16	9.85	H3PO4	61.9	20.5	H2O	30.8
8	CaO	3.4	1.5	NH3	3.56	5.24	H3PO4	53.1	13.5	H2O	40.0
9	CaO	2.4	1.2	NH3	5.12	8.58	H3PO4	57.4	16.7	H2O	35.1
10	CaO	2.4	1.2	NH3	5.10	8.50	H3PO4	57.2	16.6	H2O	35.2
11	CaO	1..1	0.54	NH3	3.32	5.34	H3PO4	59.0	16.5	H2O	36.6
12	CaO	1.2	0.57	NH3	3.27	5.16	H3PO4	58.2	15.9	H2O	37.3
13	CaO	2.4	0.93	NH3	2.80	3.63	H3PO4	49.4	11.1	H2O	45.4
14	CaO	3.2	1.2	NH3	2.58	3.10	H3PO4	45.4	9.47	H2O	48.9
15	CaO	3.3	1.2	NH3	2.52	2.97	H3PO4	44.1	8.98	H2O	50.1
16	CaO	3.97	1.31	NH3	2.0	2.1	H3PO4	40.2	7.62	H2O	53.8
17	CaO	4.63	1.42	NH3	1.3	1.3	H3PO4	35.7	6.25	H2O	58.3
18	CaO	5.64	1.60	NH3	0.61	0.57	H3PO4	30.8	5.00	H2O	62.9
19	CaO	5.91	1.61	NH3	0.18	0.16	H3PO4	28.6	4.46	H2O	65.3
20	CaO	3.5	1.2	NH3	2.46	2.81	H3PO4	42.5	8.42	H2O	51.5
21	CaO	3.60	1.18	NH3	2.43	2.63	H3PO4	39.6	7.43	H2O	54.4
22	CaO	3.57	1.09	NH3	2.37	2.38	H3PO4	35.5	6.20	H2O	58.5
23	CaO	3.50	1.04	NH3	2.39	2.35	H3PO4	34.3	5.85	H2O	59.8
24	CaO	3.42	0.977	NH3	2.37	2.24	H3PO4	31.8	5.21	H2O	62.4
25	CaO	3.09	0.841	NH3	2.39	2.14	H3PO4	29.0	4.52	H2O	65.5
26	CaO	3.04	0.821	NH3	2.38	2.12	H3PO4	28.6	4.42	H2O	66.0
27	CaO	0.45	0.10	NH3	2.70	2.00	H3PO4	17.5	2.25	H2O	79.3
28	CaO	1.2	0.29	NH3	2.60	2.02	H3PO4	20.7	2.80	H2O	75.5
29	CaO	1.9	0.48	NH3	2.54	2.08	H3PO4	23.7	3.37	H2O	71.8
30	CaO	3.58	0.962	NH3	1.91	1.69	H3PO4	28.2	4.33	H2O	66.3
31	CaO	4.17	1.13	NH3	1.49	1.32	H3PO4	28.3	4.36	H2O	66.1
32	CaO	4.18	1.12	NH3	1.4	1.2	H3PO4	27.8	4.27	H2O	66.6
33	CaO	4.65	1.26	NH3	1.1	0.97	H3PO4	28.2	4.36	H2O	66.0
34	CaO	5.03	1.39	NH3	0.92	0.84	H3PO4	29.4	4.65	H2O	64.6
35	CaO	5.10	1.41	NH3	0.91	0.83	H3PO4	29.7	4.71	H2O	64.3
36	CaO	0.6	0.7	NH3	5.84	21.9	H3PO4	77.9	50.7	H2O	15.7
37	CaO	0.91	0.78	NH3	5.60	15.9	H3PO4	72.7	35.7	H2O	20.8
38	CaO	1.4	0.99	NH3	5.38	12.5	H3PO4	67.9	27.4	H2O	25.3
39	CaO	1.9	1.2	NH3	5.23	10.8	H3PO4	64.4	23.0	H2O	28.5
40	CaO	2.2	1.3	NH3	5.13	9.81	H3PO4	61.9	20.6	H2O	30.7
41	CaO	2.1	1.2	NH3	5.18	10.1	H3PO4	62.6	21.2	H2O	30.1
42	CaO	2.4	1.3	NH3	4.80	8.68	H3PO4	60.3	18.9	H2O	32.5
43	CaO	2.7	1.2	NH3	3.90	5.92	H3PO4	54.7	14.4	H2O	38.7
44	CaO	3.0	1.4	NH3	4.17	6.73	H3PO4	56.4	15.8	H2O	36.5
45	CaO	3.2	1.5	NH3	3.84	5.91	H3PO4	54.7	14.6	H2O	38.3
46	CaO	3.3	1.5	NH3	3.64	5.40	H3PO4	53.4	13.7	H2O	39.6
47	CaO	3.5	1.6	NH3	3.55	5.21	H3PO4	52.9	13.5	H2O	40.1
48	CaO	3.5	1.4	NH3	3.01	4.11	H3PO4	50.3	11.9	H2O	43.1
49	CaO	3.8	1.6	NH3	2.70	3.69	H3PO4	50.4	11.9	H2O	43.1
50	CaO	4.24	1.66	NH3	2.1	2.7	H3PO4	48.0	10.7	H2O	45.7
51	CaO	4.45	1.65	NH3	1.6	2.0	H3PO4	45.9	9.74	H2O	48.0
52	CaO	4.66	1.69	NH3	1.3	1.6	H3PO4	44.9	9.31	H2O	49.2
53	CaO	4.90	1.74	NH3	1.0	1.2	H3PO4	43.9	8.93	H2O	50.2
54	CaO	5.29	1.80	NH3	0.48	0.54	H3PO4	41.9	8.17	H2O	52.3
55	CaO	5.68	1.87	NH3	0.0	0.0	H3PO4	40.1	7.56	H2O	54.2
56	CaO	2.2	1.2	NH3	5.12	9.52	H3PO4	61.1	19.7	H2O	31.6
57	CaO	2.2	1.2	NH3	5.12	9.50	H3PO4	61.0	19.7	H2O	31.7
58	CaO	2.3	1.3	NH3	5.10	9.11	H3PO4	59.7	18.5	H2O	32.9
59	CaO	2.4	1.2	NH3	5.11	8.71	H3PO4	58.0	17.2	H2O	34.5
60	CaO	2.5	1.2	NH3	5.10	8.29	H3PO4	56.3	15.9	H2O	36.2
61	CaO	2.5	1.2	NH3	5.10	8.09	H3PO4	55.4	15.2	H2O	37.1
62	CaO	2.5	1.1	NH3	5.09	7.52	H3PO4	52.6	13.5	H2O	39.8
63	CaO	0.15	0.05	NH3	5.97	6.00	H3PO4	35.4	6.17	H2O	58.5
64	CaO	0.35	0.11	NH3	5.78	5.95	H3PO4	36.8	6.57	H2O	57.1
65	CaO	0.69	0.23	NH3	5.64	6.18	H3PO4	40.0	7.60	H2O	53.7
66	CaO	1.1	0.40	NH3	5.53	6.58	H3PO4	44.0	9.10	H2O	49.3
67	CaO	1.6	0.64	NH3	5.34	7.06	H3PO4	48.6	11.1	H2O	44.5
68	CaO	1.6	0.67	NH3	5.30	7.10	H3PO4	49.2	11.4	H2O	43.9
69	CaO	2.0	0.90	NH3	5.22	7.81	H3PO4	53.6	13.9	H2O	39.2
70	CaO	2.6	1.3	NH3	4.63	7.47	H3PO4	56.3	15.8	H2O	36.5
71	CaO	2.9	1.4	NH3	4.38	7.04	H3PO4	56.1	15.7	H2O	36.6
72	CaO	0.71	0.37	NH3	1.6	2.8	H3PO4	63.4	18.9	H2O	34.3
73	CaO	1.8	0.74	NH3	1.3	1.8	H3PO4	53.5	12.6	H2O	43.3
74	CaO	2.5	0.95	NH3	1.4	1.7	H3PO4	48.5	10.4	H2O	47.5
75	CaO	2.9	1.0	NH3	1.2	1.4	H3PO4	46.1	9.44	H2O	49.8
76	CaO	3.83	1.27	NH3	0.99	1.1	H3PO4	41.3	7.83	H2O	53.9
77	CaO	3.91	1.29	NH3	0.52	0.56	H3PO4	41.4	7.79	H2O	54.2
78	CaO	4.24	1.36	NH3	1.2	1.3	H3PO4	38.9	7.13	H2O	55.7
79	CaO	4.24	1.34	NH3	0.45	0.47	H3PO4	38.9	7.05	H2O	56.4
80	CaO	4.68	1.44	NH3	1.3	1.3	H3PO4	36.3	6.42	H2O	57.7
81	CaO	4.71	1.44	NH3	1.2	1.2	H3PO4	35.7	6.23	H2O	58.4
82	CaO	4.86	1.48	NH3	1.0	1.0	H3PO4	35.4	6.15	H2O	58.7
83	CaO	4.95	1.48	NH3	0.99	0.98	H3PO4	34.5	5.92	H2O	59.5
84	CaO	5.15	1.52	NH3	0.46	0.45	H3PO4	34.2	5.80	H2O	60.2
85	CaO	5.33	1.54	NH3	0.03	0.03	H3PO4	32.9	5.43	H2O	61.8
86	CaO	0.22	0.050	NH3	2.73	2.04	H3PO4	18.4	2.39	H2O	78.6
87	CaO	0.35	0.084	NH3	2.81	2.23	H3PO4	22.6	3.11	H2O	74.2
88	CaO	0.47	0.11	NH3	2.74	2.10	H3PO4	20.2	2.70	H2O	76.6
89	CaO	1.1	0.26	NH3	2.64	2.09	H3PO4	22.0	3.01	H2O	74.3
90	CaO	1.9	0.56	NH3	2.73	2.70	H3PO4	35.9	6.16	H2O	59.5
91	CaO	1.8	0.50	NH3	2.61	2.32	H3PO4	29.6	4.59	H2O	65.9
92	CaO	1.9	0.50	NH3	1.81	1.54	H3PO4	27.3	4.05	H2O	68.9
93	CaO	4.07	1.20	NH3	1.80	1.76	H3PO4	33.9	5.74	H2O	60.2
94	CaO	3.72	0.99	NH3	1.73	1.51	H3PO4	27.4	4.16	H2O	67.2
95	CaO	0.65	0.54	NH3	1.6	4.3	H3PO4	76.3	36.2	H2O	21.5
96	CaO	0.70	0.59	NH3	3.8	11	H3PO4	74.4	36.0	H2O	21.1
97	CaO	1.9	1.0	NH3	1.6	2.8	H3PO4	62.2	18.5	H2O	34.3
98	CaO	1.9	1.0	NH3	3.22	5.57	H3PO4	61.2	18.6	H2O	33.7
99	CaO	2.4	1.2	NH3	4.56	7.81	H3PO4	58.8	17.5	H2O	34.3
100	CaO	3.3	1.4	NH3	1.3	1.8	H3PO4	52.8	12.7	H2O	42.6
101	CaO	3.3	1.4	NH3	2.6	3.7	H3PO4	52.5	12.9	H2O	41.6
102	CaO	3.6	1.6	NH3	3.41	4.94	H3PO4	52.4	13.2	H2O	40.6
103	CaO	3.9	1.6	NH3	2.5	3.4	H3PO4	50.0	11.7	H2O	43.5
104	CaO	4.41	1.64	NH3	1.2	1.4	H3PO4	46.3	9.83	H2O	48.1
105	CaO	5.42	1.83	NH3	0.22	0.24	H3PO4	41.6	8.03	H2O	52.8
106	CaO	0.5	0.3	NH3	5.51	9.98	H3PO4	61.5	19.3	H2O	32.5
107	CaO	0.4	0.2	NH3	5.57	7.68	H3PO4	51.4	12.3	H2O	42.6
108	CaO	0.57	0.21	NH3	5.60	6.69	H3PO4	44.6	9.25	H2O	49.2
109	CaO	1.4	0.62	NH3	5.32	7.59	H3PO4	52.1	12.9	H2O	41.2
110	CaO	1.4	0.72	NH3	5.32	8.94	H3PO4	58.3	17.0	H2O	35.0
111	CaO	3.0	1.4	NH3	4.00	6.22	H3PO4	55.2	14.9	H2O	37.8
112	CaO	2.5	1.1	NH3	4.39	6.32	H3PO4	52.3	13.1	H2O	40.8
113	CaO	0	0	NH3	0	0	H3PO4	78.92	38.19	H2O	21.08
114	CaO	0	0	NH3	3.3	23	H3PO4	88.1	105	H2O	8.6
115	CaO	0	0	NH3	3.4	17	H3PO4	84.7	72.8	H2O	11.9
116	CaO	0	0	NH3	3.91	8.11	H3PO4	67.7	24.4	H2O	28.4
117	CaO	0	0	NH3	2.77	2.00	H3PO4	16.0	2.00	H2O	81.3
118	CaO	6.11	1.66	NH3	0	0	H3PO4	28.3	4.41	H2O	65.6
119	CaO	0.1	0.1	NH3	0	0	H3PO4	78.8	38.3	H2O	21.0
120	CaO	traces	traces	NH3	3.3	23	H3PO4	88.1	105	H2O	8.6
121	CaO	traces	traces	NH3	3.4	17	H3PO4	84.6	72.2	H2O	12.0
122	CaO	0.58	0.37	NH3	3.80	8.00	H3PO4	67.7	24.7	H2O	28.0
123	CaO	3.4	1.2	NH3	2.52	2.94	H3PO4	43.6	8.82	H2O	50.5
124	CaO	5.70	1.60	NH3	0.55	0.51	H3PO4	30.3	4.88	H2O	63.4
125	CaO	2.99	0.802	NH3	2.40	2.12	H3PO4	28.1	4.31	H2O	66.5
126	CaO	0	0	NH3	6.00	5.94	H3PO4	34.6	5.95	H2O	59.4
127	CaO	5.7	1.9	NH3	0	0	H3PO4	40.1	7.56	H2O	54.2
128	CaO	2.1	1.2	NH3	5.16	9.87	H3PO4	62.0	20.6	H2O	30.7
129	CaO	3.4	1.5	NH3	3.56	5.24	H3PO4	53.1	13.5	H2O	40.0
130	CaO	2.4	1.2	NH3	5.10	8.50	H3PO4	57.3	16.6	H2O	35.3

Notes:
   Table 4  ^a  The content is expressed as: mol/100 mol solute.
   Table 4  ^b  The solid phases are: A=Ca(H₂PO₄)₂·H₂O; B=NH₄H₂PO₄; C=Ca₉(NH₄)₄H₃₂(PO₄)₁₈·10H₂O; D=CaHPO₄·2H₂O; E=2H₃PO₄H₂O; F=NH₄H₅(PO₄)₂; G=NH₄H₅(PO₄)₂·H₂O.
   Table 4  ^c  These data are from Ref. 1.

Method/Apparatus/Procedure:
   No information is given.

Source and Purity of Materials:
   No information is given.

Estimated Errors:

   Temperature: No information is given. The compiler estimates the reproducibility to be about 1 %.

References:
   ¹Flatt, R.; Brunisholz, G.; Lauber, E. Helv. Chim. Acta 1953, 36, 1971.