IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 2-Methyl-2-butene with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 2-Methyl-2-butene; C5H10; [513-35-9]  NIST Chemistry WebBook for detail
Original Measurements:
   Natarajan, G.S.; Venkatachalam, K.A., J. Chem. Eng. Data 1972, 17, 328-9.

 Variables:
   Temperature = 15-25 °C

 Prepared By:
   M.C. Haulait-Pirson, G.T. Hefter

 Experimental Remarks:
   Compiler's note: Although the data have not been measured in pure water the low concentration of the added acid is unlikely to cause the olefin solubility to differ markedly from that in pure water. Further, solubility data are given in the paper for 0.05 and 0.1 mol L-1 HCl.

 Experimental Data:   (Notes on the Nomenclature)
  
Solubility of 2-methyl-2-butene in 0.001 mol/L HNO3 solution.
t/°Cg1/100 g solution (compiler)g1/100 g soln. Note (compiler)105 * Mole Fraction x1 (compiler)103 * n1/V2 [mol/L]
150.037b9.35.15 ± 0.21 (a)
200.035b8.84.88 ± 0.16 (a)
250.033b8.34.71 ± 0.20 (a)
 Notes:
   Table 1    Compiler's note: Although the data have not been measured in pure water the low concentration of the added acid is unlikely to cause the olefin solubility to differ markedly from that in pure water. Further solubility data are given in the paper for 0.05 and 0.1 mol L-1 HCl.
   Table 1  a  Uncertainties stated to be "standard deviation from means".
   Table 1  b  Assuming a solution density of 1.00 g mL-1 at all temperatures.

 Method/Apparatus/Procedure:
   15 mL of the aqueous medium was equilibrated with 1 mL of (1) by mechanical shaking in a thermostatted glass burette. After settling (judged visually), 5 mL of the aqueous layer was withdrawn and the olefin content determined by titration with bromine using standard procedures.

 Source and Purity of Materials:
   (1) Prepared by dehydration of t-amyl alcohol and then washed, dried and fractionated. Purity (no specification) was determined by chromatography.
   (2) Not specified.

 Estimated Errors:
   Solubility: see table above.
   Temperature: ± 0.05 K