IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitroethane with 2,2,4-Trimethylpentane and Heptacosafluorotributanamine

Components:
   (1) 2,2,4-Trimethylpentane; C8H18; [540-84-1]  NIST Chemistry WebBook for detail
   (2) Heptacosafluorotributanamine; C12F27N; [311-89-7]  NIST Chemistry WebBook for detail
   (3) Nitroethane; C2H5NO2; [79-24-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Vreeland, J.; Dunlap, R., J. Phys. Chem. 61, 329-33 (1957).

Variables:
   Temperature = 298 K to 325 K

Prepared By:
   V. P. Sazonov, N. I. Lisov and N. V. Sazonov

Experimental Data:   (Notes on the Nomenclature)

Table 1. Mutual solubility of nitroethane (1), 2,2,4-trimethylpentane (2) and Heptacosafluorotributanamine (3) a
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)
25.0	298.2	22.2	77.8	0.303	0.697
25.0	298.2	67.7	32.3	0.761	0.239
25.0	298.2	4.0	81.8	0.067	0.906
25.0	298.2	13.4	75.5	0.209	0.772
25.0	298.2	16.4	73.6	0.249	0.734
25.0	298.2	18.8	76.2	0.271	0.721
25.0	298.2	69.0	30.0	0.777	0.222
25.0	298.2	75.0	23.6	0.827	0.171
25.0	298.2	2.5	5.0	0.155	0.204
25.0	298.2	2.2	7.8	0.126	0.295
25.0	298.2	0.0	7.6	0.0	0.326
25.0	298.2	0.0	83.5	0.0	0.968
25.0	298.2	0.1	0.0	0.009	0.0
25.0	298.2	99.9	0.0	0.999	0.0
25.0	298.2	20.9*	12.6*	0.571	0.226
25.0	298.2	37.1*	16.8*	0.696	0.207
25.0	298.2	46.0*	19.4*	0.734	0.204
25.0	298.2	60.9*	23.6*	0.779	0.199
25.0	298.2	5.0*	15.0*	0.210	0.414
25.0	298.2	7.9*	28.8*	0.233	0.558
25.0	298.2	11.7*	47.2*	0.247	0.656
25.0	298.2	15.4*	70.5*	0.243	0.732
25.0	298.2	19.6*	69.9*	0.294	0.689
25.0	298.2	46.7*	47.0*	0.596	0.395
31.5	304.7	5.0	75.0	0.088	0.872
31.5	304.7	15.0	67.8	0.244	0.725
31.5	304.7	1.3	12.6	0.068	0.431
31.5	304.7	30.0	60.6	0.423	0.562
31.5	304.7	42.2	51.3	0.550	0.440
31.5	304.7	58.8	37.6	0.701	0.294
31.5	304.7	75.0	22.4	0.833	0.164
31.5	304.7	85.0	13.9	0.902	0.097
31.5	304.7	2.0	10.0	0.108	0.357
31.5	304.7	0.0	8.8	0.0	0.362
31.5	304.7	0.0	77.6	0.0	0.953
31.5	304.7	0.1	0.0	0.009	0.0
31.5	304.7	99.9	0.0	0.999	0.0
31.5	304.7	8.1*	26.5*	0.247	0.530
31.5	304.7	13.1*	39.6*	0.295	0.586
31.5	304.7	17.4*	52.1*	0.316	0.622
31.5	304.7	29.8*	58.5*	0.428	0.553
31.5	304.7	40.0*	50.0*	0.541	0.444
31.5	304.7	57.3*	36.6*	0.699	0.293
31.5	304.7	10.0*	14.5*	0.357	0.341
31.5	304.7	30.0*	20.0*	0.615	0.270
31.5	304.7	50.0*	25.0*	0.722	0.237
33.7	306.9	7.1	71.4	0.126	0.832
33.7	306.9	20.0	63.1	0.316	0.654
33.7	306.9	30.0	58.4	0.430	0.551
33.7	306.9	2.2	9.5	0.120	0.341
33.7	306.9	41.6	52.3	0.543	0.448
33.7	306.9	48.3	46.3	0.609	0.383
33.7	306.9	53.6	41.2	0.660	0.333
33.7	306.9	60.0	35.9	0.714	0.281
33.7	306.9	77.0	24.3	0.830	0.172
33.7	306.9	80.8	14.0	0.892	0.102
33.7	306.9	1.9	5.1	0.121	0.214
33.7	306.9	0.0	10.1	0.0	0.398
33.7	306.9	0.0	75.0	0.0	0.946
33.7	306.9	0.1	0.0	0.009	0.0
33.7	306.9	99.9	0.0	0.999	0.0
33.7	306.9	11.1*	14.1*	0.386	0.323
33.7	306.9	17.9*	30.9*	0.407	0.462
33.7	306.9	27.6*	48.6*	0.444	0.513
33.7	306.9	32.3*	54.1*	0.466	0.512
33.7	306.9	12.1*	14.1*	0.408	0.313
33.7	306.9	20.8*	18.9*	0.520	0.311
33.7	306.9	37.7*	29.1*	0.623	0.316
33.7	306.9	46.8*	34.0*	0.656	0.313
33.7	306.9	40.7*	51.7*	0.539	0.450
33.7	306.9	47.3*	45.6*	0.606	0.384
33.7	306.9	52.7*	41.1*	0.655	0.336
35.0	308.2	7.1	68.1	0.130	0.819
35.0	308.2	20.0	62.0	0.319	0.649
35.0	308.2	28.8	57.1	0.424	0.553
35.0	308.2	35.0	53.8	0.489	0.494
35.0	308.2	40.0	51.0	0.537	0.450
35.0	308.2	57.3	37.1	0.696	0.296
35.0	308.2	62.9	33.3	0.738	0.257
35.0	308.2	72.1	25.2	0.810	0.186
35.0	308.2	85.0	13.5	0.904	0.094
35.0	308.2	1.6	8.4	0.093	0.321
35.0	308.2	2.6	5.1	0.160	0.206
35.0	308.2	0.0	10.6	0.0	0.411
35.0	308.2	0.0	74.1	0.0	0.944
35.0	308.2	0.1	0.0	0.009	0.0
35.0	308.2	99.9	0.0	0.999	0.0
51.3	324.5	2.0	8.3	0.114	0.312
51.3	324.5	3.0	17.4	0.128	0.490
51.3	324.5	5.0	30.0	0.156	0.616
51.3	324.5	8.8	41.2	0.212	0.653
51.3	324.5	14.6	50.0	0.284	0.639
51.3	324.5	30.0	50.0	0.461	0.505
51.3	324.5	43.9	43.8	0.593	0.389
51.3	324.5	50.0	40.0	0.646	0.340
51.3	324.5	61.8	32.2	0.739	0.253
51.3	324.5	70.0	26.6	0.797	0.199
51.3	324.5	83.4	14.7	0.894	0.104
51.3	324.5	0.1	0.0	0.009	0.0
51.3	324.5	99.9	0.0	0.999	0.0

Table 2. Compositions of the three equilibrium liquid phases
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Comment(s)
25.0	298.2	4.2	7.5	0.221	0.259	amine-rich phsae
31.5	304.7	2.8	12.4	0.137	0.399	amine-rich phsae
33.7	306.9	3.5	8.7	0.184	0.300	amine-rich phsae

Table 3. Compositions of the three equilibrium liquid phases
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Comment(s)
25.0	298.2	15.9	72.2	0.246	0.734	hydrocarbon-rich phase
31.5	304.7	22.1	64.2	0.336	0.641	hydrocarbon-rich phase
33.7	306.9	33.6	57.5	0.464	0.522	hydrocarbon-rich phase

Table 4. Compositions of the three equilbrium liquid phases
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Comment(s)
25.0	298.2	71.2	26.9	0.799	0.198	nitroethane-rich phase
31.5	304.7	67.6	29.5	0.774	0.222	nitroethane-rich phase
33.7	306.9	55.5	39.6	0.676	0.317	nitroethane-rich phase

Notes:
   Table 1  ^*  Values marked with asterisks correspond to composition of ternary mixtures with transition of the equilibrium of two liquid phases in equilibrium of the three liquid phases.
   Table 1  ^a  The compilers extracted these data from the published graphs.

Method/Apparatus/Procedure:
   The titration method was used. The third component was added until a phase just disappeared or reappeared. These titrations were carried out in stoppered 150 mm test tubes which (were placed) in temperature baths. In cases where a shift from two phases to one was approached, the size of one layer usually decreased faster than the other upon addition of the third component. When such behavior was observed, addition of the third component was made dropwise until the system became homogeneous. Near the end-point, ten minutes were allowed between drops in order to establish temperature equilibrium. In cases requiring a shift from two to three phases, it was found difficult to observe the appearance of the third phase when it appeared at the interface or the meniscus. In such cases, making up a three-phase solution and titrating with a third component until the shift from three to two phases was observed obtained greater reproducibility.

Source and Purity of Materials:
   (1) Matheson Chemical Co.; research grade; distilled through a Todd column; b. p. = (114.7 to 114.8)°C.
   (2) Phillips Petroleum Co.; pure grade; 99 mole % minimum; p(25°C) = 687.74 g·L^-1, not purified.
   (3) Minnesota Mining and Manufacturing Co.; distilled through a Todd column; b. p. = (178.0 to 178.1)°C.

Estimated Errors:

   Temperature: ±0.05 K, composition: 1%; Titer: ±0.002 mL.