IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Biphenyl with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Biphenyl; C12H10; [92-52-4]  NIST Chemistry WebBook for detail

Original Measurements:
   Bohon, R.L.; Claussen, W.F., J. Am. Chem. Soc. 1951, 73, 1571-8.

Variables:
   Temperature = 0.4 °C - 42.8 °C

Prepared By:
   G.T. Hefter

Experimental Data:   (Notes on the Nomenclature)

Solubility of biphenyl in water
t/°C	10⁴ * g₁/100 g solution (compiler)	10⁷ * Mole Fraction x₁ (compiler)
0.4	2.83	3.30
2.4	2.97	3.47
5.2	3.38	3.94
7.6	3.64	4.25
10.0	4.06	4.74
12.6	4.58	5.35
14.9	5.11	5.96
15.9	5.27	6.15
25.0	7.48^b	8.73^b
25.6	7.78	9.08
30.1	9.64	11.2
30.4	9.58	11.2
33.3	11.0	12.8
34.9	11.9	13.9
36.0	12.5	14.6
42.8	17.2	20.1

Notes:
   ^a  Solubilities of (1) in (2) were reported as "optical density" (absorbance) measurements. Solubilities were calculated by the compiler using the Beer-Lambert law, the stated cell path-length (1 cm) and the authors' "extinction coefficients" (absorptivities) and corrected optical densities. This gave a solubility of g(1)/L sln which was then converted to g(1)/100g sln by assuming a solution density of 1.00 kg/L.
   ^b  Given in the paper as 7.48 x 10^{-3g(1)/L sln.} Method/Apparatus/Procedure:
   A round-bottomed flask containing about 4 mL of (1) and 400 mL of (2) was evacuated, suspended in a thermostat, shaken for 24h and then allowed to settle for at least another 24h. Next, desired quantities of the water layer were syphoned into 6 glass-stoppered Erlenmeyer flasks. These 6 flasks had previously been tared, partialy filled with a suitable amount of diluent water, and reweighed. Weighed portions of the samples were inserted into a quartz cuvette and measured in a Beckman DU spectrophotometer. Absorbances were corrected for absorption of (1) onto the walls of the cuvette.

Source and Purity of Materials:
   (1) Matheson Co., purified by recrystallization from absolute methanol.
   (2) Air-free conductivity water, no further details given.

Estimated Errors:
   Solubility: ± 0.5% relative
   Temperature: ± 0.02°C