IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: 2-Methyl-2-propanol with Tetradecane (n-tetradecane) and Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 2-Methyl-2-propanol (tert-butanol,tert-butyl alcohol); C4H10O; [75-65-0]  NIST Chemistry WebBook for detail
   (3) Tetradecane (n-tetradecane); C14H30; [629-59-4]  NIST Chemistry WebBook for detail

Original Measurements:
   Silva, M.K.; Michnick, M.J.; Willhite, G.P., Fluid Phase Equilib. 59, 247-62 (1990).

Variables:
   Temperature = 298 K

Prepared By:
   A. Skrzecz

Experimental Remarks:

   Comments: Data reported in the above table were adjusted by the compiler so that the sum of mass fractions equaled 1.000, the presented results were always within the authors' 95% confidence interval.

Experimental Data:   (Notes on the Nomenclature)

Compositions of coexisting phases
t/°C	T/K	Mass Fraction w₁ (compiler)	Mass Fraction w₂ (compiler)	Mole Fraction x₁	Mole Fraction x₂	Comment(s)
25.0	298.2	0.122	0.868	0.2503	0.6653	hydrocarbon-rich phase
25.0	298.2	0.126	0.862	0.2533	0.6474	hydrocarbon-rich phase
25.0	298.2	0.135	0.853	0.2684	0.6335	hydrocarbon-rich phase
25.0	298.2	0.137	0.852	0.2737	0.6359	hydrocarbon-rich phase
25.0	298.2	0.140	0.849	0.2786	0.6313	hydrocarbon-rich phase
25.0	298.2	0.142	0.847	0.2819	0.6282	hydrocarbon-rich phase
25.0	298.2	0.143	0.846	0.2835	0.6267	hydrocarbon-rich phase
25.0	298.2	0.147	0.843	0.2922	0.6260	hydrocarbon-rich phase
25.0	298.2	0.149	0.841	0.2954	0.6230	hydrocarbon-rich phase
25.0	298.2	0.152	0.838	0.3003	0.6185	hydrocarbon-rich phase
25.0	298.2	0.153	0.837	0.3019	0.6170	hydrocarbon-rich phase
25.0	298.2	0.226	0.747	0.3668	0.4529	hydrocarbon-rich phase
25.0	298.2	0.241	0.730	0.3807	0.4308	hydrocarbon-rich phase
25.0	298.2	0.259	0.710	0.3974	0.4070	hydrocarbon-rich phase
25.0	298.2	0.277	0.689	0.4108	0.3818	hydrocarbon-rich phase
25.0	298.2	0.324	0.635	0.4439	0.3250	hydrocarbon-rich phase
25.0	298.2	0.403	0.003	0.1415	0.0004	water-rich phase
25.0	298.2	0.424	0.006	0.1530	0.0008	water-rich phase
25.0	298.2	0.497	0.016	0.1983	0.0024	water-rich phase
25.0	298.2	0.506	0.015	0.2038	0.0023	water-rich phase
25.0	298.2	0.519	0.016	0.2129	0.0025	water-rich phase
25.0	298.2	0.531	0.016	0.2212	0.0025	water-rich phase
25.0	298.2	0.533	0.017	0.2229	0.0027	water-rich phase
25.0	298.2	0.561	0.020	0.2447	0.0033	water-rich phase
25.0	298.2	0.568	0.021	0.2506	0.0035	water-rich phase
25.0	298.2	0.579	0.023	0.2602	0.0039	water-rich phase
25.0	298.2	0.585	0.023	0.2651	0.0039	water-rich phase
25.0	298.2	0.683	0.087	0.4110	0.0196	water-rich phase
25.0	298.2	0.668	0.100	0.4306	0.0234	water-rich phase
25.0	298.2	0.685	0.119	0.4460	0.0289	water-rich phase
25.0	298.2	0.679	0.138	0.4577	0.0348	water-rich phase
25.0	298.2	0.661	0.184	0.4834	0.0503	water-rich phase

Method/Apparatus/Procedure:
   The analytical method was used. Mixtures containing approximately equal volumes of each phase, in vials capped with teflon-lined septa were vigorously shaken and then allowed to equilibrate at least 24 h in a thermostated water bath. Six to 14 glc analyses¹ with ethanol as the internal standard, were performed on each sample. Reported concentrations of each component were bounded by estimated 95% confidence interval, but the sum of mass fraction differed from 1.000.

Source and Purity of Materials:
   (1) Fischer Scientific, certified; used as received; purity >99 wt %, vertified by glc.
   (2) Aldrich, certified; used as received; purity >99 wt %, vertified by glc.
   (3) De-ionized and distilled, sodium concentration <0.025 ppm sodium.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Temp. ±0.1°C; composition 0.3%-3.0% of the measured value (estimated by the authors).

References:
   ¹ M. K. Silva, Dissertation, Univ. of Kansas, Lawrence, Kansas 1990.