IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Nitromethane with Cholesteryl esters
Components:
   (1) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (2) Cholesteryl esters; C39H68O2-C49H88O2; []  NIST Chemistry WebBook for detail
Original Measurements:
   H.H.O. Schmid; Mangold, H.K.; Lundberg, W.O., J. Am. Oil Chem. Soc. 42, 372-81 (1965).

 Variables:
   Temperature = 441 K to 471 K

 Prepared By:
   V. P. Sazonov

 Experimental Data:   (Notes on the Nomenclature)
  
Upper critical solution temperatures of the systems nitromethane + cholesteryl ester
t/°CT/KChemical Name
168.0441.2Cholest-5-en-3-yldodecanoate; C39H68O2; [1908-11-8]
175.0448.2Cholest-5-en-3-yltetradecanoate; C41H72O2; [1989-52-2]
181.5454.7Cholest-5-en-3-ylhexadecanoate; C43H76O2; [601-34-3]
187.0460.2Cholest-5-en-3-ylocatadecanoate; C45H80O2; [35602-69-8]
192.0465.2Cholest-5-en-3-yleicosanoate; C47H84O2; [2573-03-7]
197.5470.7Cholest-5-en-3-yldocosanoate; C49H88O2; [61510-09-6]
 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 (0.2-0.3 mm diameter) by dipping consecutively into both liquids. The height of the liquid was 7-10 mm. Room temperature solids were melted on a glass slide over a microburner. The capillary was sealed at both ends to a length of 30-35 mm, then inserted into the channel on the slide and heated on the stage. The UCST was determined by following the appearance and disapperance of the meniscus.

 Source and Purity of Materials:
   (1) Fisher Scientific Co.; certified, No. N-98; n(20 °C, D) = 1.3820, d(20 °C) = 1134 g·L-1.
   (2) Not specified.

 Estimated Errors:

   Temperature: ± 0.5 K.