SDS Volume (700)

Volume 38. Hydrocarbons in Water and Seawater, Part II, p None

Original Measurements

Sanemasa, I.; Araki, M.; Deguchi, T.; Nagai, H.; Bull. Chem. Soc. Jpn. 1982, 55, 1054-62.

Variables:

Room Temp: 15 - 45 °C

Prepared by:

G.T. Hefter

Method/Apparatus/Procedure:

The apparatus is similar to an earlier design [2] and is described in detail in the paper. 100-200 mL of [2] and 10-20 mL of liquid [1] were placed in separate but connected thermostatted flasks. After thermal equilibrium was established a recirculating stream of air was used to vaporize liquid [1] and to transport the vapor to the flask containing [2]. Five 10 mL aliquots were withdrawn into separatory funnels. The concentration of [1] in [2] was then determined by extraction into chloroform followed by UV-spectrophotometry. Standards for the spectrophotometry were prepared by weight from pure liquid solutes.

Source and Purity of Materials:

1. Analytical reagent grade (Wako Pure Chemical Ind. Ltd.), stated purity 98.0%, used without further purification.
2. Redistilled; no further details given.

Estimated Errors:

Ambient temperature: ±0.01°C
Mass concentration (m/v) (1): see table, type of error not specified.

References

¹ Kell, G. S.; J. Chem. Eng. Data 1975, 20, 97.
² Sanemasa, I.; Araki, M.; Deguchi, T.; Nagai, H.; Chem. Lett. 1981, 225-8.