IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: 2-Methyl-2-propanol with 2,4,4-Trimethylpentene (diisobutylene isomer not specified) and Water

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Components:
   (1) 2,2,4-Trimethylpentane (diisobutylene isomer not specified); C8H16; [25167-70-8]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (3) 2-Methyl-2-propanol (tert-butanol,tert-butyl alcohol); C4H10O; [75-65-0]  NIST Chemistry WebBook for detail

Original Measurements:
   Lee, Y.Y.; Lee, Y.W.; Hong, W.H.; Lee, H., J. Chem. Eng. Data 33, 258-60 (1988).

Variables:
   Temperature = 298 K - 348 K

Prepared By:
   A. Skrzecz

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	0.0259	0.9739	0.0387	0.9601	hydrocarbon-rich phase
25.0	298.2	0.0834	0.9161	0.1208	0.8762	hydrocarbon-rich phase
25.0	298.2	0.1504	0.8382	0.2003	0.7372	hydrocarbon-rich phase
25.0	298.2	0.2338	0.7512	0.2953	0.6267	hydrocarbon-rich phase
25.0	298.2	0.3380	0.6301	0.3817	0.4700	hydrocarbon-rich phase
25.0	298.2	0.4085	0.5383	0.4155	0.3617	hydrocarbon-rich phase
25.0	298.2	0.4877	0.4242	0.4313	0.2478	hydrocarbon-rich phase
25.0	298.2	0.5638	0.2855	0.4108	0.1374	hydrocarbon-rich phase
25.0	298.2	0.5836	0.1785	0.3474	0.0702	hydrocarbon-rich phase
25.0	298.2	0.3407	0.0128	0.1132	0.0028	hydrocarbon-rich phase
25.0	298.2	0.0745	0.0006	0.0192	0.0001	water-rich phase
25.0	298.2	0.1013	0.0011	0.0267	0.0002	water-rich phase
25.0	298.2	0.1327	0.0017	0.0359	0.0003	water-rich phase
25.0	298.2	0.1513	0.0017	0.0416	0.0003	water-rich phase
25.0	298.2	0.1659	0.0016	0.0462	0.0003	water-rich phase
25.0	298.2	0.1799	0.0016	0.0507	0.0003	water-rich phase
25.0	298.2	0.1929	0.0016	0.0550	0.0003	water-rich phase
25.0	298.2	0.2047	0.0021	0.0590	0.0004	water-rich phase
25.0	298.2	0.2047	0.0036	0.0718	0.0007	water-rich phase
25.0	298.2	0.3407	0.0128 (a)	0.1132	0.0028	water-rich phase
45.0	318.2	0.0361	0.9595	0.0525	0.9212	hydrocarbon-rich phase
45.0	318.2	0.1003	0.8951	0.1412	0.8321	hydrocarbon-rich phase
45.0	318.2	0.1790	0.8103	0.2361	0.7058	hydrocarbon-rich phase
45.0	318.2	0.2765	0.7007	0.3318	0.5555	hydrocarbon-rich phase
45.0	318.2	0.3504	0.6144	0.3888	0.4504	hydrocarbon-rich phase
45.0	318.2	0.4351	0.5066	0.4309	0.3314	hydrocarbon-rich phase
45.0	318.2	0.5086	0.3955	0.4367	0.2243	hydrocarbon-rich phase
45.0	318.2	0.5691	0.2824	0.4164	0.1365	hydrocarbon-rich phase
45.0	318.2	0.5998	0.1663	0.3587	0.0657	hydrocarbon-rich phase
45.0	318.2	0.3079	0.0076	0.0984	0.0016	hydrocarbon-rich phase
45.0	318.2	0.0604	0.0006	0.0154	0.0001	water-rich phase
45.0	318.2	0.0883	0.0006	0.0230	0.0001	water-rich phase
45.0	318.2	0.1056	0.0006	0.0279	0.0001	water-rich phase
45.0	318.2	0.1200	0.0006	0.0321	0.0001	water-rich phase
45.0	318.2	0.1311	0.0011	0.0354	0.0002	water-rich phase
45.0	318.2	0.1450	0.0006	0.0396	0.0001	water-rich phase
45.0	318.2	0.1549	0.0011	0.0427	0.0002	water-rich phase
45.0	318.2	0.1685	0.0011	0.0470	0.0002	water-rich phase
45.0	318.2	0.1929	0.0021	0.0550	0.0004	water-rich phase
45.0	318.2	0.3079	0.0076 (a)	0.0984	0.0016	water-rich phase
75.0	348.2	0.0588	0.9393	0.0856	0.9030	hydrocarbon-rich phase
75.0	348.2	0.1250	0.8663	0.1705	0.7806	hydrocarbon-rich phase
75.0	348.2	0.2044	0.7829	0.2641	0.6683	hydrocarbon-rich phase
75.0	348.2	0.2898	0.6859	0.3438	0.5375	hydrocarbon-rich phase
75.0	348.2	0.3743	0.5901	0.4112	0.4282	hydrocarbon-rich phase
75.0	348.2	0.4555	0.4830	0.4433	0.3105	hydrocarbon-rich phase
75.0	348.2	0.5302	0.3778	0.4578	0.2155	hydrocarbon-rich phase
75.0	348.2	0.5898	0.2719	0.4407	0.1342	hydrocarbon-rich phase
75.0	348.2	0.6210	0.1623	0.3834	0.0662	hydrocarbon-rich phase
75.0	348.2	0.2524	0.0045	0.0762	0.0009	hydrocarbon-rich phase
75.0	348.2	0.0394	0.0024	0.0099	0.0004	water-rich phase
75.0	348.2	0.0653	0.0006	0.0167	0.0001	water-rich phase
75.0	348.2	0.0792	0.0006	0.0205	0.0001	water-rich phase
75.0	348.2	0.0960	0.0012	0.0252	0.0002	water-rich phase
75.0	348.2	0.1031	0.0011	0.0272	0.0002	water-rich phase
75.0	348.2	0.1111	0.0011	0.0295	0.0002	water-rich phase
75.0	348.2	0.1217	0.0011	0.0326	0.0002	water-rich phase
75.0	348.2	0.1357	0.0011	0.0368	0.0002	water-rich phase
75.0	348.2	0.1511	0.0011	0.0415	0.0002	water-rich phase
75.0	348.2	0.2524	0.0045 (a)	0.0762	0.0009	water-rich phase

Notes:
   ^a  Plait points estimated by the authors.

Method/Apparatus/Procedure:
   The tubes, of 1.5 cm internal diameter and 16 cm long, containing about 20 cm² liquid, were placed in a thermostated bath. After 2 h of shaking, mixtures were allowed to separate for 5 h. Samples of each phase were analyzed by glc (Propak-Q, 250°C, He 50 mL/min) equipped with a thermal conductivity detector connected with integration unit. (Syringes were heated to prevent phase separation.) Mean of four analyzes was  reported. Plait points were estimated by the Treybal's method.¹

Source and Purity of Materials:
   (1) Junsei Chem. Co., Ltd., guaranteed reagent grade, certified purity >99.5 mole %; used as received; purity >99.9% by glc.
   (2) Wako Pure Chem. Ind. Ltd., guaranteed reagent grade, certified purity >99.5 mole %; used as received; purity >99.9% by glc.
   (3) De-ionized, distilled.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Temp. ±0.2°C (accuracy of bath control); conc. ±0.0005 mole fraction.

References:
   ¹ R. E. Treybal, L. D. Weber, and J. F. Daley, Ind. Eng. Chem. 38, 817 (1946).

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Last updated: February 18, 2015 (Created: August 17, 2007)