Phase Equilibria and Phase Diagrams for the Aqueous Ternary System Containing Sodium, Chloride, and Metaborate Ions at 288.15 and 308.15 K and 0.1 MPa
Table 3
Solubilities, densities, and refractive indices of the ternary system (NaCl + NaBO2 + H2O) at T = 288.15 and 308.15 K and 0.1 MPa.a
Number
Composition of liquid phase (100 )
Physicochemical properties
Equilibrium solid phasec
NaCl
NaBO2
H2O
nD
ρ (g·cm−3)
Exp.
Cal.
Error (%)
Exp.
Cal.
Error (%)
T = 288.15 K
1, A
0.00
18.75
81.25
1.381165
1.380946
0.02
1.23257
1.233083
−0.04
Smt
2
2.19
16.84
80.97
1.381333
1.379982
0.10
1.23445
1.225448
0.73
Smt
3
4.48
16.31
79.21
1.382766
1.382761
0.00
1.23691
1.237727
−0.07
Smt
4
6.23
15.29
78.48
1.383543
1.383297
0.02
1.23841
1.238616
−0.02
Smt
5
8.37
14.96
76.67
1.386051
1.386332
−0.02
1.25052
1.252547
−0.16
Smt
6
9.80
14.31
75.89
1.386602
1.387243
−0.05
1.25164
1.255849
−0.34
Smt
7
11.73
13.51
74.76
1.388240
1.388682
−0.03
1.25933
1.261443
−0.17
Smt
8, E1
15.78
12.81
71.41
1.393743
1.394239
−0.04
1.28321
1.287257
−0.32
Smt + Te
9
16.45
11.91
71.64
1.392724
1.393132
−0.03
1.28220
1.280336
0.15
Te
10
19.06
9.30
71.64
1.390829
1.391105
−0.02
1.26806
1.266143
0.15
Te
11, E2
23.69
5.29
71.02
1.389759
1.389125
0.05
1.25242
1.250018
0.19
Te + Ha
12
24.67
4.15
71.18
1.387503
1.387945
−0.03
1.23924
1.242539
−0.27
Ha
13
24.90
3.07
72.03
1.385798
1.385571
0.02
1.23060
1.229566
0.08
Ha
14, B
26.37
0
73.63
1.381019
1.380294
0.05
1.20238
1.200096
0.19
Ha
T=308.15 K
1, A′
0
26.25
73.75
1.393555
1.392905
0.05
1.30969
1.309373
0.02
Smt
Ref.d
0
26.30
73.7
—e
—
—
—
—
—
Smt
2
3.05
24.73
72.22
1.394734
1.394722
0.00
1.31580
1.315954
−0.01
Smt
3
4.48
24.61
70.91
1.395337
1.397000
−0.12
1.32017
1.327283
−0.54
Smt
4
5.26
23.59
71.15
1.396353
1.395947
0.03
1.32141
1.320209
0.09
Smt
5
6.24
23.53
70.23
1.397057
1.397563
−0.04
1.32325
1.328297
−0.38
Smt
6
8.20
21.92
69.88
1.398424
1.397209
0.09
1.32899
1.323756
0.39
Smt
7,
9.71
21.90
68.39
1.400152
1.399867
0.02
1.34505
1.337236
0.58
Smt + Te
Ref.d
9.40
22.40
68.20
—
—
—
—
—
—
Smt + Te
8
15.11
15.03
69.86
1.392665
1.393046
−0.03
1.29003
1.291311
−0.10
Te
9
19.52
9.94
70.53
1.388626
1.388750
−0.01
1.26231
1.261882
0.03
Te
10,
23.92
5.86
70.22
1.386720
1.386832
−0.01
1.24574
1.246036
−0.02
Te + Ha
Ref.d
23.80
5.90
70.30
—
—
—
—
—
—
Te + Ha
11
24.47
4.62
70.91
1.384967
1.384853
0.01
1.23394
1.234590
−0.05
Ha
12
25.21
3.16
71.63
1.382760
1.382689
0.01
1.22125
1.222015
−0.06
Ha
13
26.07
1.48
72.45
1.380175
1.380219
0.00
1.20791
1.207774
0.01
Ha
14, B′
26.69
0.00
73.31
1.377920
1.377802
0.01
1.19398
1.194236
−0.02
Ha
Ref.d
26.60
0
73.40
—
—
—
—
—
—
Ha
aThe standard uncertainties u are u(T) = 0.01 K, u(p) = 0.005 MPa, u(ρ) = 0.15 mg·cm−3, and u (nD) = 0.00003; u(x) for NaCl and NaBO2 is 0.0037 and 0.00028 in mass fraction, respectively. , in mass fraction. cSmt, NaBO2·4H2O; Te, NaCl·NaBO2·2H2O; Ha, NaCl. dFor reference [11]. eWithout data in Reference [11].
