IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Acetonitrile with 1-Hydropentadecafluoroheptane

Components:
   (1) 1-Hydropentadecafluoroheptane; C7HF15; [375-83-7]  NIST Chemistry WebBook for detail
   (2) Acetonitrile; C2H3N; [75-05-8]  NIST Chemistry WebBook for detail

Original Measurements:
   Konecky, J.O.; Deal, C.H., J. Phys. Chem. 67, 504-6 (1963).

Variables:
   Temperature = 256 K to 317 K

Prepared By:
   Valerii P. Sazonov and Nikolai V. Sazonov

Experimental Remarks:

   The mutual solubility of acetonitrile and 1-hydropentadecafluoroheptane in volume fractions were reported over the temperature range in graphical form. Data presented here were extracted by the compilers from the reported graphs. Timmermans¹ values of density acetonitrile ρ(25 °C) = 776.8 g·L^-1, was used in the above conversions.

Experimental Data:   (Notes on the Nomenclature)

Mutual solubility of acetonitrile (1) and 1-hydropentadecafluoroheptane (2)
t/°C	T/K	10² * Mass Fraction w₁	Mole Fraction x₁	Ø₁	Ø₁ Note	Comment(s)
-17.1	256.1	8.1	0.639	16.4	100	Fluorohydrocarbon-rich phase
1.4	274.6	9.3	0.672	18.5	100	Fluorohydrocarbon-rich phase
6.4	279.6	-	-	-	100	Fluorohydrocarbon-rich phase
28.5	301.7	-	-	-	100	Fluorohydrocarbon-rich phase
28.6	301.8	15.3	0.783	28.6	100	Fluorohydrocarbon-rich phase
39.2	312.4	22.1	0.850	38.5	100	Fluorohydrocarbon-rich phase
42.5	315.7	-	-	-	100	Fluorohydrocarbon-rich phase
42.8	316.0	28.5	0.890	46.8	100	Fluorohydrocarbon-rich phase
43.7	316.9	37.6	0.923	57.1	100	Fluorohydrocarbon-rich phase
43.8	317.0	-	-	-	100	Fluorohydrocarbon-rich phase
-17.1	256.1	-	-	-	100	Acetonitrile-rich phase
1.4	274.6	-	-	-	100	Acetonitrile-rich phase
6.4	279.6	89.3	0.994	94.9	100	Acetonitrile-rich phase
28.5	301.7	78.3	0.986	88.9	100	Acetonitrile-rich phase
28.6	301.8	-	-	-	100	Acetonitrile-rich phase
39.2	312.4	-	-	-	100	Acetonitrile-rich phase
42.5	315.7	55.7	0.962	73.5	100	Acetonitrile-rich phase
42.8	316.0	-	-	-	100	Acetonitrile-rich phase
43.7	316.9	-	-	-	100	Acetonitrile-rich phase
43.8	317.0	-	- (UCST)	-	100	Acetonitrile-rich phase

Method/Apparatus/Procedure:
   The synthetic (cloud point) method using sealed Pyrex tubes was employed. All values reported are an average of at least three determinations agreeing within 0.2 °C or better. No details were reported.

Source and Purity of Materials:
   (1) Source not specified; spectroscopic grade; not purified.
   (2) Prepared by the decarboxylation of perfluoro-n-octanoic acid; dried over phosphorus pent oxide and distilled on a 10 plate microhelipod column at a reflux ratio of 5/1; boiling point = 95 °C/100.1 kPa, p(25 °C)=1718 g·L^-1.

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

References:
   1. J. Timmermans, Physico-Chemical Constants of Pure Organic Compounds (Elsevier, New York, 1950).