IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Nitromethane with Ethanedioic acid
Components:
   (1) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (2) Ethanedioic acid; C2H2O4; [144-62-7]  NIST Chemistry WebBook for detail
Original Measurements:
   Smagowski, H., Zesz. Nauk. Wydz. Mat., Fiz. Chem., Univ. Gdanski, Chem. 3, 45-53 (1974).

 Variables:
   Temperature = 273 K to 308 K

 Prepared By:
   V. P. Sazonov

 Experimental Data:   (Notes on the Nomenclature)
  
Solubility of ethanedioic acid in nitromethane
t/°CT/KConcentration c1 [mol/L]102 * Mass Fraction w2 (compiler)Mole Fraction x2 (compiler)
0273.20.0140.110.0007
15.0288.20.0300.240.0016
25.0298.20.0630.500.0034
35.0308.20.1401.120.0076
 Notes:
   a  The densities of the solutions were taken to be by the compiler those of nitromethane (Timmermans1) at the specified temperatures.

 Method/Apparatus/Procedure:
   The titration method was used: 25 mL of (1) and an amount of (2) exceeding the solubility were placed into 50 mL volumetric flasks. The flasks were closed by ground stoppers and were stored at the required temperature in a thermostat for 45 hours, with intensive stirring every several hours. After this, 5 mL samples of the saturated solution were taken by pipette, diluted to 25 mL with nitromethane and titrated against 0.07 N tetrabutylammonium hydroxide solution.

 Source and Purity of Materials:
   (1) Source not specified; purity not specified; dried over P2O5 and distilled at reduced pressure.
   (2) Source not specified; purity not specified; purified by crystallization from water.

 Estimated Errors:
   Solubility: Not reported.
   Temperature: Not reported.
   Pressure: Not reported.

 References:
   1 J. Timmermans, Physico-Chemical Constants of Pure Organic Compounds (Elsevier, New York, 1950).