Components:
(1) 2,4-Dimethylpentane,
C7H16; [108-08-7]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Krzyzanowska, T.; Szeliga, J.; Nafta (Katowice) 1978, 12, 413-7.
Variables:
Ambient temperature: One temperature: 25 °C
Prepared by:
Method/Apparatus/Procedure:
Saturated solutions of (1) in (2) were prepared in two ways. First, 200 microliters of (1) was injected into 20 mL of (2) and thermostatted at 25 °C. Second the mixture, of (1) and (2) as above was thermostatted at 70 °C and then cooled to 25 °C. The time required to obtain equilibrium was three weeks. The solubility of () in (2) was measured by glc. A Perkin-Elmer model F-11 gas chromatograph equipped with a 100-150 mesh Porasil column (70 °C) and a flame ionization detector was used. Saturated solutions of heptane in (2) were used as standard solutions.
Source and Purity of Materials:
- Not specified.
- Not specified.
Estimated Errors:
Mass concentration (m/v) (1): 0.14 mg(1)/kg(2) (standard deviation from 7-9 determinations)
Experimental Values:
Note: The solubility of 2,4-dimethylpentane in water at 25°C was reported to be 4.41 mg(1)/kg(2).The corresponding mass percent and mole fraction, x1, calculated by compiler are 4.41 × 10-4 g(1)/100 g sln and 7.92 × 10-7.
Editor's Note: Based on the results for this and other hydrocarbon-water systems, uncertainty exists about wether the datum compiled here is independent of that of Price for the same system (see previous page).
