IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitroethane with 1,2-Ethanediol and 1-Dodecanol

Components:
   (1) 1,2-Ethanediol; C2H6O2 ; [107-21-1]  NIST Chemistry WebBook for detail
   (2) 1-Dodecanol; C12H26O; [112-53-8]  NIST Chemistry WebBook for detail
   (3) Nitroethane; C2H5NO2; [79-24-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Francis, A.W., J. Phys. Chem. 60, 20-7 (1956).

Variables:
   Temperature = 285 K to 297 K

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

Experimental Data:   (Notes on the Nomenclature)

Table 1. Solubility of nitroethane (1) 1,2-ethanediol (2) and 1-dodecanol (3)
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)
12.0a	285.2	30	40	0.33	0.54
14.0	287.2	83	6	0.88	0.08
metastable	287.2	29	13.5	0.42	0.238
metastable	287.2	26	26	0.34	0.41
metastable	287.2	23	47	0.25	0.62
16.0	289.2	82	8	0.86	0.10
16.0	289.2	54b	22	0.60	0.29
16.0	289.2	54b	14	0.64	0.20
16.0	289.2	40	15	0.52	0.24
16.0	289.2	30	42	0.33	0.55
16.0	289.2	22	51	0.23	0.65
16.0	289.2	19	45	0.22	0.62
16.5c	289.7	54	23.5	0.59	0.31
20	293.2	75	12	0.79	0.15
20	293.2	54	7	0.69	0.11
20	293.2	46	31	0.50	0.40
20	293.2	35	45	0.36	0.56
20	293.2	27	53	0.27	0.65
20	293.2	22	68	0.20	0.76
20	293.2	20	40	0.24	0.57
20	293.2	15	80	0.13	0.85
20	293.2	10	25	0.15	0.46
21.0d	294.2	24	61	0.23	0.71
24.0	297.2	75	12	0.79	0.15
24.0	297.2	54b	3	0.72	0.05
24.0	297.2	50	29.5	0.53	0.380
24.0	297.2	40	41	0.41	0.51
24.0	297.2	32 b	55	0.31	0.64
24.0	297.2	19.5	55.5	0.202	0.694
24.0	297.2	19 b	64	0.18	0.75
24.0	297.2	16	36	0.20	0.55
24.0	297.2	13	80	0.12	0.86
24.0	297.2	12	28	0.17	0.48

Table 2. Composition of equilibrium of two and three liquid phases
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Comment(s)
14.0	287.2	73	8	0.81	0.12	nitroethane-rich phase
14.0	287.2	71	12	0.77	0.16	nitroethane-rich phase
14.0	287.2	19.5	37.5	0.237	0.552	nitroethane-rich phase
16.0	289.2	82	4	0.89	0.05	nitroethane-rich phase
16.0	289.2	68	14	0.74	0.18	nitroethane-rich phase
16.0	289.2	11	29	0.16	0.50	nitroethane-rich phase

Table 3. Composition of equilibrium of two and three liquid phases
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Comment(s)
14.0	287.2	38	17	0.50	0.27	glycol-rich phase
14.0	287.2	21	72	0.19	0.79	glycol-rich phase
14.0	287.2	18	75	0.16	0.81	glycol-rich phase
16.0	289.2	24	8	0.39	0.16	glycol-rich phase
16.0	289.2	19	74	0.17	0.80	glycol-rich phase
16.0	289.2	7	90	0.06	0.93	glycol-rich phase

Table 4. Composition of equilibrium of two and three liquid phases
t/°C	T/K	10² * Mass Fraction w₁	Mass Fraction w₂	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Comment(s)
14.0	287.2	solid	alcohol	solid	alcohol	alcohol-rich phase
14.0	287.2	32	40	0.35	0.53	alcohol-rich phase
14.0	287.2	solid	alcohol	solid	alcohol	alcohol-rich phase
16.0	289.2	solid	alcohol	solid	alcohol	alcohol-rich phase
16.0	289.2	41	32	0.45	0.43	alcohol-rich phase
16.0	289.2	solid	alcohol	solid	alcohol	alcohol-rich phase

Notes:
   Table 1  ^a  Quadruple point temperature. The equilibrium of three liquid phases crystals of alcohol.
   Table 1  ^b  Plait point of binodal curve.
   Table 1  ^c  Subcol temperature. A subcol is a point in a ternary system where a third binodal curve meets by its plait point with an isotherm of a ridge.
   Table 1  ^d  Col temperature. A col is a point in a ternary system where two separate binodal curves meet at their respective plait points.

Method/Apparatus/Procedure:
   The synthetic method was used. Observations were made after vigorous shaking in glass-stoppered tubes (15 mL capacity) immersed in water baths in large Dewar flasks. Temperature was adjusted by adding small amounts of cooler or warmer water. Filling started with 5 mL of one reagent followed by small additions of the other two, usually alternately, to maintain a trace of lower or upper layer, until the composition of a plait point was reached or the tube was full (see Tables 1 and 2).

Source and Purity of Materials:
   (1) Eastman Kodak Co.; distilled with 30 cm column with reflux; b. p. = (114 to 115)°C, m. p. = -78°C, n(20°C,D) = 1.3920, p(20°C) = 1046.9 g·L^-1.
   (2) Source not specified; purity not specified; purified by crystallization; m. p. = -13.3°C, n(20°C,D) = 1.4315, p(25°C) = 1110.1 g·L^-1.
   (3) Source not specified; purity not specified; purified by crystallization; m. p. = 22.7°C, n(24°C, D) = 1.4410, p(24°C) = 832 g·L^-1.

Estimated Errors:
   Solubility: Not specified.
   Temperature: Not specified.