Compilation - Heptane with Water (IUPAC SDS Volume 37)
SDS Volume (557)
Volume 37. Hydrocarbons in Water and Seawater, Part I, p 498
Original Measurements
Schatzberg, P.; J. Phys. Chem. 1963, 67, 776-9.
Variables:
Temperature: 25 °C
Prepared by:
Method/Apparatus/Procedure:
(1) was saturated by storing over a layer of (2) in a brown glass bottle without any agitation. The bottle was sealed with serum cap and completely submerged in the water-bath for seven days. A 20 mL sample was withdrawn with a silicone-hydrophobized hypodermic syringe. Stabilized Karl Fischer reagent diluted to a titer of 1.0-1.3 mg (2)/mL was used to titrate (2) in (1) directly in the presence of methanol to a 'dead-stop' end-point using a Beckman KF3 automatic titrimeter.
Source and Purity of Materials:
- Eastman Organic Chemicals; doubly distilled; passed repeatedly through a column of silica gel until no absorption occurred in the 220 to 340 nm spectral range.
- Distilled and deionized.
Heptane with Water
Components:
(1) Heptane,
$\ce{ C7H16 }$;
[142-82-5]
NIST WebBook
(2) Water,
$\ce{ H2O }$;
[7732-18-5]
NIST WebBook
Experimental Values:
The solubility of water in heptane at 25°C was reported to be 91 mg(2)/kg sln corresponding to a mole fraction, x2, of 5.06 × 10-4 and to a mass percent of 0.0091 g(1)/100 g sln.
