SDS Volume (868)

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

Original Measurements

Schwarz, F. P.; J. Chem. Eng. Data. 1977, 22, 273-7.

Variables:

Room Temp: 8.6 - 31.7 °C

Prepared by:

A. Maczynski

Method/Apparatus/Procedure:

Two methods were used:
At 25 °C the solubility of (1) in (2) was determined from UV absorption measurements and was used as a standard at other temperatures. At other temperatures the spectrofluorimetry method was used.
The sealed fluorescence cells contained 5 mL of the aqueous solution and an excess of (1) were rotated at least 72 h in a water bath, then removed, quickly wiped dry and placed in the fluorimeter.

Source and Purity of Materials:

1. source not specified; better than 99.9 mole%, by glc; used as received.
2. Distilled over $\ce{KMnO4}$ and $\ce{NaOH}$ and passed through a Sephadex column.

Estimated Errors:

Ambient temperature: ±0.1°C
Mass concentration (m/v) (1): see above.