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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
1-Ethylnaphthalene with Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 1-Ethylnaphthalene; C12H12; [1127-76-0]
NIST Chemistry WebBook
for detail
Original Measurements:
Schwarz, F.P., J. Chem. Eng. Data. 1977, 22, 273-7.
Variables:
Temperature = 8.6 °C - 31.7 °C
Prepared By:
A. Maczynski
Experimental Data:
(Notes on the Nomenclature)
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 KMnO
4
and NaOH and passed through a Sephadex column.
Estimated Errors:
Solubility: see above.
Temperature: ± 0.1°C