Compilation - 3-Methylheptane with Water (IUPAC SDS Volume 38)
SDS Volume (645)
Volume 38. Hydrocarbons in Water and Seawater, Part II, p None
Original Measurements
Krzyzanowska, T.; Szeliga, J.; Nafta (Katowice) 1978, 12, 413-7.
Variables:
Room Temp: 25 °C
Prepared by:
Method/Apparatus/Procedure:
The saturated solutions of (1) in (2) were prepared in two ways. First, 200 µL 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 (1) 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): 0.04 mg(1)/kg(2) (standard deviation from 7-9 determinations).
Components:
- 3-Methylheptane, $\ce{ C8H18 }$; [589-81-1] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
The solubility of 3-methylheptane in water at 25°C was reported to be 0.792 mg(1)/kg(2).
The corresponding mass percent and mole fraction, x1, calculated by compiler are 7.92 × 10-5 g(1)/100 g sln and 1.25 × 10-7.
Editor's Note: Based on the results for this and other hydrocarbon-water systems, uncertainty exists about whether the datum compiled here is independent of that of Price for the same system (see previous page). Consequently, this system has not been evaluated.
