IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Acetonitrile with Fatty acids
Components:
   (1) Fatty acids; C14H28O2 - C24H48O2; []  NIST Chemistry WebBook for detail
   (2) Acetonitrile; C2H3N; [75-05-8]  NIST Chemistry WebBook for detail
Original Measurements:
   Schmid, H.H.O.; Mangold, H.K.; Lundberg, W.O.; J. Am. Oil Chem. Soc. 42, 372 (1965).

 Variables:
   Temperature = 327 K to 382 K

 Prepared By:
   Valerii P. Sazonov

 Experimental Data:   (Notes on the Nomenclature)
  
Upper critical solution temperatures of the binary systems acetonitrile (1) + fatty acid (2)
t/°CT/KChemical Name
53.5326.7Tetradecanoic acid; C14H28O2; [544-63-8]
68.5341.7Hexadecanoic acid; C16H32O2; [57-10-3]
81.5354.7Octadecanoic acid; C18H36O2; [57-11-4]
91.5364.7Eicosanoic acid; C20H40O2; [506-30-9]
101.0374.2Docosanoic acid; C22H44O2; [112-85-6]
109.0382.2Tetracosanoic acid; C24H48O2; [557-59-5]
 Method/Apparatus/Procedure:
   The synthetic method was used. A Reichert microscope, type RCH, with a heating stage was used. A 26 x 38 mm slide was adapted to hold capillaries on the stage. Two glass strips were glued, using water glass, to the slide, leaving a 0.5 mm channel. The slide was then placed in the adjustable device of the heating stage. Samples of (1) and (2) were put into capillary tubing (0.2 to 0.3 mm diameters) by dipping consecutively into both liquids. The height of the liquid was 7 to 10 mm. Room temperature solids were melted on a glass slide over a micro burner. The capillary was sealed at both ends to a length of 30 to 35 mm, then inserted in to the channel on the slide and heated on the stage. The UCST was determined by following the appearance and disappearance of a meniscus.

 Source and Purity of Materials:
   (1) Baker Chemical Co.; reagent, No. 9011; n(20 °C, D) = 1.3445, d(20 °C, 4 °C) = 0.780.
   (2) Not specified.

 Estimated Errors:

   Temperature: ± 0.5 K.