IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Naphthalene with 1,3-Dinitrobenzene

Components:
   (1) 1,3-Dinitrobenzene; C6H4N2O4; [99-65-0]  NIST Chemistry WebBook for detail
   (2) Naphthalene; C10H8; [91-20-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Kremann, R., Monatsch. Chem. 1904, 25, 1271-1292.

Variables:
   Temperature = Temperature

Prepared By:
   W.E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)


T/K	Mole Fraction x₁	Mole Fraction x₂
360.7	0.000	1.000
356.2	0.061	0.939
352.2	0.125	0.875
348.2	0.211	0.789
339.7	0.280	0.720
333.2	0.339	0.661
326.2	0.401	0.599
323.7	0.423	0.577
323.8	0.445	0.555
323.6	0.456	0.544
323.6	0.483	0.517
324.0	0.500	0.500
324.0	0.509	0.491
323.8	0.537	0.463
323.6	0.546	0.454
323.7	0.567	0.433
324.0	0.567	0.433
325.0	0.608	0.392
325.2	0.617	0.383
324.9	0.619	0.381
328.7	0.647	0.353
329.5	0.660	0.340
334.5	0.724	0.276
337.4	0.757	0.243
340.7	0.795	0.205
345.7	0.879	0.121
348.2	0.911	0.089
351.7	0.968	0.032
353.8	1.000	0.000

Notes:
     Phase diagram suggests formation of a 1:1 naphthalene - 1,3-dinitrobenzene molecular compound having a melting temperature of circa T/K = 324.0. Two eutectic points occur at about x₁ = 0.42 and T/K = 323.6 and at x₁ = 0.60 and T/K = 323.7.

Method/Apparatus/Procedure:
   Binary mixtures prepared by weight. While the experimental details were not given in the paper, compiler speculates (based upon quantity of material used) that the sample was sealed in a glass container, temperature slowly varied, and the phase diagram determined by visually noting the temperature at which the last/first crystal of solid disappeared/appeared.

Source and Purity of Materials:
   (1) Purity and chemical source were not specified in paper.
   (2) Purity and chemical source were not specified in paper.

Estimated Errors:

   Temperature: T/K: precision ± 0.2 (compiler). x₁: ± 0.002 (compiler).