Components:

(1) Acetonitrile, C₂H₃N; [75-05-8] NIST WebBook
(2) Methyl hexadecanoate, C₁₇H₃₄O₂; [112-39-0] NIST WebBook
(2) Methyl octadecanoate, C₁₉H₃₈O₂; [112-61-8] NIST WebBook
(2) Methyl icosanoate, C₂₁H₄₂O₂; [1120-28-1] NIST WebBook
(2) Methyl docosanoate, C₂₃H₄₆O₂; [929-77-1] NIST WebBook

Original Measurements

Schmid, H. H. O.; Mangold, H. K.; Lundberg, W. O.; J. Am. Oil Chem. Soc. 42, 372 (1965).

Variables:

Ambient temperature: 303 - 361 K

Prepared by:

V.P. Sazonov

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:

Ambient temperature: ±0.5 K.