IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with 2,3-Dimethyl-1-butene

Components:
   (1) 2,3-Dimethyl-1-butene; C6H12; [563-78-0]  NIST Chemistry WebBook for detail
   (2) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Riccardi, R.; Franzosini, P.; Rolla, M., Z. Naturforsch. 23A, 1816-8 (1968).

Variables:
   Temperature = 319 K to 334 K

Prepared By:
   V. P. Sazonov

Experimental Remarks:

   The numerical data were not included in the original publication but were provided by Professor R. Riccardi at the request of the compiler.

Experimental Data:   (Notes on the Nomenclature)

Mutual solubility of nitromethane and 2,3-dimethyl-1-butene
t/°C	T/K	10² * Mass Fraction w₁ (compiler)	Mole Fraction x₁	Comment(s)
45.9	319.1	-	-	Hydrocarbon-rich phase
45.9	319.1	79.0	0.838	Nitromethane-rich phase
53.7	326.9	-	-	Hydrocarbon-rich phase
53.7	326.9	72.7	0.786	Nitromethane-rich phase
56.1	329.3	25.9	0.325	Hydrocarbon-rich phase
56.1	329.3	-	-	Nitromethane-rich phase
58.5	331.7	-	-	Hydrocarbon-rich phase
58.5	331.7	63.9	0.709	Nitromethane-rich phase
58.8	332.0	33.7	0.412	Hydrocarbon-rich phase
58.8	332.0	-	-	Nitromethane-rich phase
59.9	333.1	35.4	0.430	Hydrocarbon-rich phase
59.9	333.1	-	-	Nitromethane-rich phase
60.1	333.3	37.0	0.447	Hydrocarbon-rich phase
60.1	333.3	55.6	0.633	Nitromethane-rich phase
60.4	333.6	42.7	0.507	Hydrocarbon-rich phase
60.4	333.6	-	-	Nitromethane-rich phase
60.7	333.9	48.8	0.568	Hydrocarbon-rich phase
60.7	333.9	51.6	0.595	Nitromethane-rich phase
60.7	333.9	-	-	Hydrocarbon-rich phase
60.7	333.9	- (UCST)	-	Nitromethane-rich phase

Method/Apparatus/Procedure:
   The synthetic method¹ was used. Tubes were filled under vacuum with known masses of degassed and moisture-free components, sealed, and then placed in a thermostat bath filled with paraffin oil. The mixtures in the tubes were shaken by a Chemap vibromixer type E-1. Temperatures were measured with Degussa Pt resistance thermometers, which were checked against standards. Phase changes (cloud points) were observed as mixtures were cooled.

Source and Purity of Materials:
   (1) Fluka AG; purity 99 mole %; fractionally distilled, degassed and finally distilled through a P₂O₅ filled tube.
   (2) Fluka AG; purity 99.99 mole %; purification as above.

Estimated Errors:

   Temperature: reproduced better than 0.1 K.

References:
   ¹ P. Franzosini, Z. Naturforsch. 18A, 224 (1963).