Solid-Liquid Phase Equilibria of the Quaternary System NaCl + NH₄Cl + NaHCO₃ + NH₄HCO₃ + H₂O at 283.15 and 313.15 K

Table 3

Solubilities and physicochemical properties in the quaternary system (NaCl + NH₄Cl + NaHCO₃ + NH₄HCO₃ + H₂O) at 283.15, 313.15 K, and 0.1 MPa^a.

No	Composition of liquid phase, 100 ^b					Composition of liquid phase, J^c/[mol/100 mol (Na^+ + NH4^+)]			Solid phase^d
	Na^+	NH4^+	Cl^−	HCO3^−	H2O	NH4^+	HCO3^−	H2O
283.15 K
1, A	10.51	0.00	15.80	0.59	73.10	0.00	2.12	887.58	S + SB
2	9.35	1.34	16.81	0.49	72.01	15.51	1.67	831.03	S + SB
3	7.89	3.29	18.32	0.59	69.91	34.74	1.86	738.34	S + SB
4, F1	7.45	4.20	19.33	0.83	68.19	41.84	2.46	679.69	S + SB + A
5	4.61	5.49	17.13	1.40	71.37	60.32	4.54	784.68	A + SB
6	2.72	7.16	16.69	2.80	70.63	77.09	8.90	760.91	A + SB
7, F2	2.36	8.14	17.17	4.35	67.98	81.48	12.84	681.24	A + AB + S
8, B	4.96	6.23	19.92	0.00	68.89	42.89	0.00	681.49	A + S
9, C	0.00	9.03	15.69	3.62	71.66	100	11.84	794.60	A + B
10	0.70	7.64	14.17	3.40	74.09	93.24	12.26	905.89	A + B
11, D	1.39	2.45	0.00	12.00	84.16	69.17	100	2380.03	AB + SB
12	1.44	2.69	1.88	9.70	84.29	70.43	75.00	2209.46	AB + SB
13	1.25	2.89	2.76	8.37	84.73	74.64	63.82	2191.78	AB + SB
14	1.46	3.49	5.42	6.37	83.26	75.33	40.58	1798.43	AB + SB
15	2.01	5.16	9.79	6.00	77.04	76.65	26.29	1144.99	AB + SB
16	2.09	5.96	11.96	5.19	74.80	78.45	20.17	985.49	AB + SB
17	2.38	7.75	16.05	5.00	68.82	80.57	15.34	716.50	AB + SB
313.15 K
1, A′	10.48	0.00	15.62	0.99	72.91	0.00	3.56	887.81	S + SB
2	10.39	0.28	16.06	0.93	72.34	3.29	3.26	859.00	S + SB
3	9.77	1.12	16.77	0.91	71.43	12.74	3.06	814.06	S + SB
4	8.78	2.73	18.26	1.20	69.03	28.44	3.70	718.56	S + SB
5	8.22	3.34	18.44	1.44	68.56	34.16	4.35	701.23	S + SB
6, F′1	6.07	6.88	21.64	2.25	63.16	59.16	5.72	543.18	S + SB + A
7	5.71	7.27	21.70	2.53	62.79	61.88	6.35	535.06	SB + A
8	5.65	7.34	21.76	2.48	62.77	62.40	6.22	533.85	SB + A
9	4.63	8.01	21.04	3.31	63.01	68.82	8.39	541.89	SB + A
10, F′2	1.67	10.76	16.80	12.02	58.75	89.18	29.39	487.36	SB + AB + A
11, B′	5.91	6.73	22.41	0.00	64.95	59.21	0.00	572.12	S + A
12, C′	0.00	12.25	19.09	8.73	59.93	100	21.02	489.85	AB + A
13, D′	1.70	6.14	0.00	25.30	66.86	82.21	100	895.73	AB + SB
14	1.75	6.18	2.16	21.88	68.03	81.87	85.47	901.85	AB + SB
15	1.79	10.04	13.31	15.90	58.96	87.73	40.99	515.85	AB + SB

^aStandard uncertainties u are u (T) = 0.1 K, u (p) = 0.005 MPa, u_r (Na⁺) = 0.003, u_r (NH₄⁺) = 0.003, u_r (Cl⁻) = 0.003, and u_r (HCO₃⁻) = 0.003. ^b, Mass fraction, ^cJ = Jänecke index. ^dA: NH₄Cl, S: NaCl, AB: NH₄HCO₃, and SB: NaHCO₃.