IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with 1-Pentene

Components:
   (1) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (2) 1-Pentene; C5H10; [109-67-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Riccardi, R.; Franzosini, P.; Rolla, M., Z. Naturforsch. 23A, 1816-8 (1968); *Spinolo, G., Int. Data Ser., Sel. Data Mixtures, Ser. A, (1) and (2), 25-29 (1981) and (1982).

Variables:
   Temperature = 309 K to 320 K

Prepared By:
   V. P. Sazonov

Experimental Data:   (Notes on the Nomenclature)

Mutual solubility of nitromethane and 1-pentene
t/°C	T/K	10² * Mass Fraction w₁ (compiler)	Mole Fraction x₁	Comment(s)
35.5	308.7	-	-	Hydrogen-rich phase
35.5	308.7	76.9	0.793	Nitromethane-rich phase
36.7	309.9	19.5	0.218	Hydrogen-rich phase
36.7	309.9	-	-	Nitromethane-rich phase
39.7	312.9	22.5	0.250	Hydrogen-rich phase
39.7	312.9	-	-	Nitromethane-rich phase
43.1	316.3	-	-	Hydrogen-rich phase
43.1	316.3	68.4	0.713	Nitromethane-rich phase
44.5	317.7	29.9	0.329	Hydrogen-rich phase
44.5	317.7	-	-	Nitromethane-rich phase
44.7	317.9	-	-	Hydrogen-rich phase
44.7	317.9	66.4	0.694	Nitromethane-rich phase
45.9	319.1	34.2	0.374	Hydrogen-rich phase
45.9	319.1	-	-	Nitromethane-rich phase
46.6	319.8	40.2	0.436	Hydrogen-rich phase
46.6	319.8	-	-	Nitromethane-rich phase
46.9	320.1	-	-	Hydrogen-rich phase
46.9	320.1	55.0	0.584	Nitromethane-rich phase
47.0	320.2	-	-	Hydrogen-rich phase
47.0	320.2	51.2	0.547	Nitromethane-rich phase
47.0	320.2	50.0	0.530	Hydrogen-rich phase
47.0	320.2	50.0 (UCST)	0.530	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 99.91 mole %; purification as above.

Estimated Errors:

   Temperature: reproduced better than 0.1 K.

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