IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: 1-Propanol with heptane and Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 1-Proponal (n-propanol, propyl alcohol, n-propyl alcohol); C3H8O; [71-23-8]  NIST Chemistry WebBook for detail
   (3) Heptane (n-heptane); C7H16; [142-82-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Timofeev, V.S.; Aristovich, V.Yu.; Sabylin, I.I.; Koshel'kov, V.A.; Pavlenko, T.G.; Serafimov, L. A., Izv. Vyssh, Uchebn. Zaved., Khim. Khim. Tekhnol. 18, 1219 (1975).

Variables:
   Temperature = 348.7 K - 349.5 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)
76.3	349.5	0.0637	0.9342	0.101	0.888	hydrocarbon-rich phase
76.3	349.5	0.3354	0.1316	0.153	0.036	water-rich phase
76.1	349.3	0.0754	0.9214	0.118	0.865	hydrocarbon-rich phase
76.1	349.3	0.3388	0.1972	0.169	0.059	water-rich phase
75.9	349.1	0.0986	0.8963	0.151	0.823	hydrocarbon-rich phase
75.9	349.1	0.3759	0.1828	0.192	0.056	water-rich phase
75.5	348.7	0.1144	0.8799	0.173	0.798	hydrocarbon-rich phase
75.5	348.7	0.4124	0.1912	0.223	0.062	water-rich phase
76.2	349.4	0.4087	0.5230	0.430	0.330	hydrocarbon-rich phase
76.2	349.4	0.4087	0.5230 (a)	0.430	0.330	water-rich phase

Notes:
   ^a  Critical solubility point.

Method/Apparatus/Procedure:
   The method is described in Ref. 1. Data are reported at the boiling point at 101.3 kPa together with liquid-liquid-vapor equilibrium data for the system.

Source and Purity of Materials:
   (1) Source not specified.
   (2) Source not specified.
   (3) Source not specified.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Not reported.

References:
   ¹ V. A. Koshelkov, T. G. Pavlenko, V. S. Timofeev, and L. A. Serafimov, Uch. Zap. Mosk. Inst. Tonkoi Khim. Tekhnol. 1, 44 (1971).