. 2023 Jan 11;8(3):3339–3347. doi: 10.1021/acsomega.2c07041

SO₄^2––H₂O at T = 273.2 K and Pressure P = 94.77 kPa^a.

No.	density ρ/g·cm^–3	composition of solution, w(B) × 10²				Jänecke index of dry salt				equilibrated solid phase
		composition of solution, w(B) × 10²				J(Li₂SO₄) + J(Rb₂SO₄) + J(MgSO₄) = 100
		w(Li₂SO₄)	w(Rb₂SO₄)	w(MgSO₄)	w(H₂O)	J(Li₂SO₄)	J(Rb₂SO₄)	J(MgSO₄)	J(H₂O)
1, G	1.3347	19.31	0.00	10.98	69.71	63.75	0.00	36.25	230.14	LSH + M₇
2	1.2870	19.47	0.66	11.66	68.21	61.25	2.09	36.66	214.54	LSH + M₇
3, E₁	1.3056	18.60	1.06	11.50	68.85	59.70	3.39	36.91	220.99	LSH + M₇ + LRH
4, K	1.2829	0.00	2.47	20.56	76.97	0.00	10.73	89.27	334.22	M₇ + RMH
5	1.2484	1.18	2.39	20.43	76.00	4.90	9.97	85.12	316.62	M₇ + RMH
6	1.2575	2.76	2.38	20.28	74.58	10.84	9.37	79.79	293.41	M₇ + RMH
7	1.2751	4.49	2.28	20.02	73.21	16.77	8.50	74.72	273.21	M₇ + RMH
8	1.2812	7.10	2.26	17.88	72.76	26.07	8.28	65.64	267.08	M₇ + RMH
9, E₃	1.2739	8.93	2.69	16.96	71.42	31.24	9.43	59.34	249.87	M₇ + RMH + LR
10	1.2905	10.49	2.35	16.38	70.78	35.90	8.05	56.05	242.26	M₇ + LR
11	1.3027	12.53	2.13	15.18	70.16	41.99	7.13	50.88	235.12	M₇ + LR
12, E₂	1.3187	13.92	2.30	14.81	68.97	44.87	7.40	47.73	222.22	M₇ + LR + LRH
13	1.3156	13.98	2.06	14.33	69.63	46.04	6.77	47.19	229.31	LRH + M₇
14	1.3044	15.90	1.80	11.83	70.47	53.83	6.10	40.06	238.63	LRH + M₇
15	1.3072	16.81	1.55	11.60	70.03	56.10	5.18	38.72	233.64	LRH + M₇
16	1.2940	17.85	1.59	11.85	68.70	57.04	5.09	37.87	219.50	LRH + M₇
17, E₁	1.3056	18.60	1.06	11.50	68.85	59.70	3.39	36.91	220.99	LSH + LRH + M₇
18	1.3755	9.67	24.67	0.00	65.66	28.16	71.84	0.00	191.21	RS + LR
19	1.3318	10.22	19.89	0.29	69.59	33.62	65.43	0.95	228.86	RS + LR
20	1.3148	10.48	17.86	0.33	71.32	36.55	62.29	1.15	248.69	RS + LR
21, E₄	1.3112	10.93	18.43	0.46	70.19	36.64	61.82	1.54	235.40	RS + LR + RMH
22	1.2807	10.86	15.47	0.39	73.29	40.65	57.91	1.44	274.44	LR + RMH
23	1.2333	11.07	11.42	0.78	76.73	47.58	49.07	3.35	329.67	LR + RMH
24	1.2053	11.23	7.55	1.87	79.35	54.38	36.56	9.05	384.16	LR + RMH
25	1.1983	11.05	5.25	4.18	79.52	53.94	25.65	20.41	388.24	LR + RMH
26	1.2103	10.21	4.75	6.98	78.06	46.52	21.65	31.83	355.86	LR + RMH
27	1.2357	10.36	4.05	9.54	76.06	43.27	16.90	39.83	317.64	LR + RMH
28	1.2456	9.86	2.97	12.67	74.49	38.65	11.66	49.69	292.05	LR + RMH
29	1.2527	9.66	2.81	13.29	74.24	37.52	10.90	51.59	288.23	LR + RMH
30	1.2565	9.33	2.77	14.22	73.68	35.43	10.54	54.03	279.93	LR + RMH
31	1.2685	9.05	2.72	16.39	71.85	32.13	9.67	58.20	255.18	LR + RMH
32, E₃	1.2739	8.93	2.69	16.96	71.42	31.24	9.43	59.34	249.87	LR + RMH + M₇
33	1.3056	17.72	11.94	0.00	70.34	59.74	40.26	0.00	237.15	LRH + LR
34	1.2823	18.31	10.02	0.99	70.69	62.47	34.17	3.36	241.14	LRH + LR
35	1.2750	18.31	8.02	1.48	72.19	65.83	28.86	5.31	259.62	LRH + LR
36	1.2589	18.12	5.87	3.07	72.94	66.97	21.70	11.33	269.62	LRH + LR
37	1.2652	17.78	4.41	5.37	72.44	64.51	15.99	19.50	262.89	LRH + LR
38	1.2743	16.51	3.56	8.14	71.80	58.53	12.62	28.85	254.60	LRH + LR
39	1.2797	15.75	3.11	10.26	70.87	54.08	10.69	35.23	243.28	LRH + LR
40	1.2840	15.30	2.78	12.55	69.38	49.95	9.08	40.97	226.54	LRH + LR
41	1.3089	14.25	2.54	13.09	70.12	47.69	8.50	43.81	234.69	LRH + LR
42, E₂	1.3187	13.92	2.30	14.81	68.97	44.87	7.40	47.73	222.22	LRH + LR + M₇
43	1.2365	23.06	1.36	0.00	75.58	94.43	5.57	0.00	309.50	LSH + LRH
44	1.2315	22.90	1.49	1.35	74.26	88.96	5.78	5.26	288.50	LSH + LRH
45	1.2408	22.05	1.38	2.71	73.86	84.36	5.27	10.37	282.63	LSH + LRH
46	1.2611	20.94	1.28	5.15	72.64	76.53	4.66	18.81	265.52	LSH + LRH
47	1.2796	19.41	1.16	7.37	72.06	69.47	4.14	26.39	257.92	LSH + LRH
48	1.2877	18.84	1.03	9.20	70.93	64.80	3.56	31.64	244.03	LSH + LRH
49	1.2929	18.36	0.99	10.33	70.32	61.85	3.32	34.82	236.93	LSH + LRH
50	1.2994	17.97	0.99	10.90	70.13	60.18	3.31	36.51	234.83	LSH + LRH
51, E₁	1.3056	18.60	1.06	11.50	68.85	59.70	3.39	36.91	220.99	LSH + LRH + M₇
52	1.2838	0.00	21.61	0.23	78.16	0.00	98.95	1.05	357.88	RS + RMH
53	1.2525	1.51	21.32	0.52	76.65	6.47	91.30	2.22	328.31	RS + RMH
54	1.2736	3.64	21.20	0.50	74.66	14.37	83.64	1.99	294.59	RS + RMH
55	1.2980	6.04	20.97	0.49	72.51	21.97	76.26	1.77	263.73	RS + RMH
56	1.3130	8.66	19.31	0.45	71.58	30.46	67.95	1.58	251.84	RS + RMH
57	1.2960	9.95	19.62	0.48	69.95	33.12	65.30	1.59	232.77	RS + RMH
58, E₄	1.3112	10.93	18.43	0.46	70.19	36.64	61.82	1.54	235.40	RS + RMH + LR

w(M) is the mass fraction of M; standard uncertainties u are u(T) = 0.20 K; u(Li⁺) = 0.0050; u(Rb⁺) = 0.0061; u(Mg²⁺) = 0.0050; u(SO₄^2–) = 0.0060; LRH: 3Li₂SO₄·Rb₂SO₄·2H₂O; RMH: Rb₂SO₄·MgSO₄·6H₂O; LR: Li₂SO₄·Rb₂SO₄; M₇: MgSO₄·7H₂O; LSH: Li₂SO₄·H₂O; and RS: Rb₂SO₄.

Table 5. Solubilities and Densities for the Quaternary System Li+, Rb+, Mg2+//SO42––H2O at T = 273.2 K and Pressure P = 94.77 kPaa.

Table 5. Solubilities and Densities for the Quaternary System Li⁺, Rb⁺, Mg²⁺//SO₄^2––H₂O at T = 273.2 K and Pressure P = 94.77 kPa^a.