IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Benzyl alcohol with Heptane and Water

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Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Benzyl alcohol (benzenemethanol); C7H8O; [100-51-6]  NIST Chemistry WebBook for detail
   (3) Heptane (n-heptane); C7H16; [142-82-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Ivanova, G.G. Telichko, T.N.; Kolyuchkina, G.Ya.; Timofeev, V.S.; Serafimov, L.A., Tr. Inst.-Mosk. Tonkoi Khim. Tekhnol. Im. M. V. Lomonosova 3(2), 99-105 (1973).

Variables:
   Temperature = 293 K - 373 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)
20	293.2	0.006	0.993	0.006	0.992	hydrocarbon-rich phase
20	293.2	0.013	0.986	0.012	0.985	hydrocarbon-rich phase
20	293.2	0.018	0.981	0.017	0.979	hydrocarbon-rich phase
20	293.2	0.012	0.000	0.002	0.000	water-rich phase
20	293.2	0.018	0.000	0.003	0.000	water-rich phase
79.4	352.6	0.034	0.965	0.031	0.960	hydrocarbon-rich phase
79.4	352.6	0.012	0.000 (b)	0.002	0.000	water-rich phase
79.4	352.6	0.057	0.940	0.052	0.929	hydrocarbon-rich phase
20	293.2	0.029	0.000 (a)	0.005	0.000	water-rich phase
79.4	352.6	0.018	0.000 (b)	0.003	0.000	water-rich phase
79.4	352.6	0.075	0.920	0.068	0.904	hydrocarbon-rich phase
79.4	352.6	0.024	0.000 (b)	0.004	0.000	water-rich phase

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1 (compiler)	Mass Fraction w2 (compiler)	Mole Fraction x1	Mole Fraction x2	Comment(s)
20	293.2	0.978	0.000	0.879	0.000	alcohol-rich phase
20	293.2	0.956	0.011	0.818	0.010	alcohol-rich phase
20	293.2	0.942	0.016	0.777	0.014	alcohol-rich phase
20	293.2	0.924	0.023	0.730	0.020	alcohol-rich phase
20	293.2	0.900	0.034	0.678	0.028	alcohol-rich phase
20	293.2	0.029	0.000	0.005	0.000	water-rich phase
20	293.2	0.029	0.000 (a)	0.005	0.000	water-rich phase
20	293.2	0.029	0.000	0.005	0.000	water-rich phase
20	293.2	0.029	0.000	0.005	0.000	water-rich phase
20	293.2	0.029	0.000	0.005	0.000	water-rich phase
100	373	0.813	0.000	0.420	0.000	alcohol-rich phase
100	373	0.029	0.000 (c)	0.005	0.000	water-rich phase
92	365	0.819	0.017	0.450	0.010	alcohol-rich phase
92	365	0.029	0.000 (c)	0.005	0.000	water-rich phase
79.7	352.9	0.090	0.903	0.081	0.879	hydrocarbon-rich phase
79.7	352.9	0.029	0.000 (a)	0.005	0.000	water-rich phase
89	362	0.805	0.047	0.0462	0.029	alcohol-rich phase
89	362	0.029	0.000 (c)	0.005	0.000	water-rich phase
83	356	0.794	0.077	0.480	0.050	alcohol-rich phase
83	356	0.029	0.000 (c)	0.005	0.000	water-rich phase
79.7	352.9	0.783	0.098	0.489	0.066	alcohol-rich phase
79.7	352.9	0.029	0.000 (a)	0.005	0.000	water-rich phase
79.7	352.9	0.783	0.098 (a)	0.489	0.066	alcohol-rich phase

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1 (compiler)	Mass Fraction w2 (compiler)	Mole Fraction x1	Mole Fraction x2	Comment(s)
20	293.2	0.053	0.947	0.049	0.951	hydrocarbon-rich phase
20	293.2	0.051	0.949	0.047	0.952	hydrocarbon-rich phase
20	293.2	0.038	0.962	0.035	0.963	hydrocarbon-rich phase
20	293.2	0.026	0.974	0.024	0.973	hydrocarbon-rich phase
20	293.2	0.018	0.981	0.017	0.979	hydrocarbon-rich phase
20	293.2	0.857	0.143	0.847	0.153	alcohol-rich phase
20	293.2	0.882	0.107	0.827	0.108	alcohol-rich phase
20	293.2	0.902	0.073	0.800	0.070	alcohol-rich phase
20	293.2	0.922	0.033	0.751	0.029	alcohol-rich phase
20	293.2	0.900	0.034 (a)	0.678	0.028	alcohol-rich phase
81.0	354.2	0.225	0.761	0.198	0.724	hydrocarbon-rich phase
81.0	354.2	0.693	0.261 (b)	0.555	0.226	alcohol-rich phase
80.9	354.1	0.192	0.795	0.170	0.760	hydrocarbon-rich phase
80.9	354.1	0.714	0.235 (b)	0.560	0.199	alcohol-rich phase
80.6	353.8	0.157	0.832	0.140	0.800	hydrocarbon-rich phase
80.6	353.8	0.738	0.198 (b)	0.553	0.160	alcohol-rich phase
80.2	353.4	0.126	0.865	0.113	0.837	hydrocarbon-rich phase
80.2	353.4	0.752	0.172 (b)	0.540	0.133	alcohol-rich phase
79.9	353.1	0.108	0.884	0.097	0.860	hydrocarbon-rich phase
79.9	353.1	0.772	0.130 (b)	0.516	0.094	alcohol-rich phase
79.7	352.9	0.090	0.903	0.081	0.879	hydrocarbon-rich phase

Notes:
   ^a  Three liquid phases in equilibrium.
   ^b,c  Boiling temperature estimated by the compiler; (b) ± 0.3 K; (c) ± 5 K.

Method/Apparatus/Procedure:
   The analytical method was used. Composition of samples was determined by glc analysis with 2-propanol as in inert standard. (Column: 1.8 m x 5 mm internal diameter, 10% squalane on polichromom, temp. 130°C, H₂-9 L/h). Solubility at 293 K was determined by Alekseev's method; at boiling point-in the apparatus reported in Ref. 2. The description of the method was taken from Ref. 1. Three liquid phases in equilibrium were observed  in the system.

Source and Purity of Materials:
   (1) Source not specified, "chromatographic purity"; used as received; n(20°C,D)=1.5401, b.p.=205.20°C; the same as in Ref. 1.
   (2) Source not specified; used as received; n(20°C,D)=1.3877, b.p.=98.4°C.
   (3) Doubly distilled; the same as in Ref. 1.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Concentration ±0.5% of glc analysis, Ref. 1.

References:
   ¹ G. G. Ivanova, T. N. Telichko, G. Ya. Kolyuchkina, V. S. Timofeev, and L. A. Serafimov, Tr. Inst.-Mosk. Inst. Tonkoi Khim. Tekhnol. im. M. V. Lomonosova 3 (1), 88 (1973).
   ² G. Ya. Kolyuchkina, V. S. Timofeev, and L. A. Serafimov, Tr. Inst.-Mosk. Inst. Tonkoi Khim.Tekhnol. im M. V. Lomonosova 1(3), 65 (1971).

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