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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitromethane with 2,6,6-Trimethylbicyclo[3.1.1]hept-2-ene and 3,7,7-Trimethylbicyclo[4.1.0] hept-3-ene
Components:
(1) Nitromethane; CH3NO2 ; [75-52-5]
NIST Chemistry WebBook
for detail
(2) 2,6,6-Trimethylbicyclo- [3.1.1.] hept-2-ene (alpha-pinene); C10H16; [7785-70-8]
NIST Chemistry WebBook
for detail
(3) 3,7,7-Trimethylbicyclo-[4.1.0.] hept-3-ene (D
3
-carene); C10H16; [13466-78-9]
NIST Chemistry WebBook
for detail
Original Measurements:
Antosik, M. and Stryjek, R.; Fluid Phase Equilib. 71, 321-31 (1992).
Variables:
Temperature = 298 K
Prepared By:
V. P. Sazonov
Experimental Data:
(Notes on the Nomenclature)
Compositions of liquid phases at equilibrium for the ternary system
t/°C
T/K
Mass Fraction w
1
(compiler)
Mass Fraction w
2
(compiler)
Mole Fraction x
1
Mole Fraction x
2
Comment(s)
25.00
298.15
0.9486
0.0497
0.9763
0.0229
nitromethane-rich phase
25.00
298.15
0.9423
0.0415
0.9733
0.0192
nitromethane-rich phase
25.00
298.15
0.9429
0.0387
0.9736
0.0179
nitromethane-rich phase
25.00
298.15
0.9388
0.0356
0.9716
0.0165
nitromethane-rich phase
25.00
298.15
0.9398
0.0322
0.9721
0.0149
nitromethane-rich phase
25.00
298.15
0.9350
0.0314
0.9698
0.0146
nitromethane-rich phase
25.00
298.15
0.9344
0.0222
0.9695
0.0103
nitromethane-rich phase
25.00
298.15
0.9288
0.0124
0.9668
0.0058
nitromethane-rich phase
25.00
298.15
0.9222
0.0077
0.9636
0.0036
nitromethane-rich phase
25.00
298.15
0.0324
0.9240
0.0695
0.8886
terpene-rich phase
25.00
298.15
0.0353
0.7136
0.0755
0.6839
terpene-rich phase
25.00
298.15
0.0369
0.6798
0.0787
0.6503
terpene-rich phase
25.00
298.15
0.0382
0.5831
0.0814
0.5569
terpene-rich phase
25.00
298.15
0.0369
0.5570
0.0788
0.5328
terpene-rich phase
25.00
298.15
0.0380
0.4859
0.0810
0.4642
terpene-rich phase
25.00
298.15
0.0397
0.3706
0.0845
0.3533
terpene-rich phase
25.00
298.15
0.0423
0.1956
0.0897
0.1859
terpene-rich phase
25.00
298.15
0.0418
0.0931
0.0887
0.0885
terpene-rich phase
Method/Apparatus/Procedure:
The analytical method was used. Liquid-liquid equilibrium was determined as described in Antosik.
1
The equilibrium cell of about 50 mL capacity, equipped with a magnetic stirrer, was sealed in a water jacket, and circulating water from a thermostat ensured temperature constancy. The three-component mixture was stirred in the equilibrium cell for about 30 min, then the mixture was left for about 1 h for complete phase separation, and samples of about 0.2 mL of each of the two phases were withdrawn from the equilibrium cell through a silicone-rubber septum using a syringe for gas chromatography analyses.
Source and Purity of Materials:
(1) Source not specified; purity 99.8 mass % by GLC; 0.025 mass % water by the Karl Fischer method.
(2) Isolated from turpentine and purified by fractional distillation at sub-ambient pressure; purity above 99.9 mass % by GLC.
(3) Isolated from turpentine and purified by fractional distillation at sub-ambient pressure; purity above 99.9 mass % by GLC.
Estimated Errors:
Temperature: control to ± 0.02 K.
References:
1
M. Antosik, J. Chem. Thermodyn. 22, 85 (1990).