IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Acetonitrile with Cholesteryl esters
Components:
   (1) Acetonitrile; C2H3N; [75-05-8]  NIST Chemistry WebBook for detail
   (2) Cholesteryl esters; C39H68O2 and C41H72O2; []  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 = 474 K and 485 K

 Prepared By:
   Valerii P. Sazonov

 Experimental Data:   (Notes on the Nomenclature)
  
Upper critical solution temperatures of the binary systems acetonitrile (1) + cholesteryl ester (2)
t/°CT/KChemical Name
201.0474.2Cholest-5-en-3-yl dodecanoate; C39H68O2; [1908-11-8]
212.0485.2Cholest-5-en-3-yl tetradecanoate; C41H72O2; [1989-52-2]                       
 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. (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 the 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.