IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with Nitroethane and Heptane

Components:
   (1) Nitromethane; CH3NO2 ; [75-52-5]  NIST Chemistry WebBook for detail
   (2) Nitroethane; C2H5NO2; [79-24-3]  NIST Chemistry WebBook for detail
   (3) Heptane; C7H16; [142-82-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Komarova. E. G.; and Kogan, V. B.; Zh. Prikl. Khim. (Leningrad) 37, 1776-86 (1964).

Variables:
   Temperature = 293 K to 343 K

Prepared By:
   V. P. Sazonov

Experimental Data:   (Notes on the Nomenclature)

Compositions of two coexisting liquid phases
t/°C	T/K	Mass Fraction w₁ (compiler)	Mass Fraction w₂ (compiler)	Mole Fraction x₁	Mole Fraction x₂	Comment(s)
20.0	293.2	0.8802	0.0917	0.9057	0.0767	nitroalkane-rich phase
20.0	293.2	0.7792	0.1905	0.8180	0.1626	nitroalkane-rich phase
20.0	293.2	0.6758	0.2855	0.7255	0.2492	nitroalkane-rich phase
20.0	293.2	0.5758	0.3765	0.6321	0.3360	nitroalkane-rich phase
20.0	293.2	0.4780	0.4642	0.5367	0.4238	nitroalkane-rich phase
20.0	293.2	0.3751	0.5554	0.4318	0.5198	nitroalkane-rich phase
20.0	293.2	0.3065	0.6141	0.3588	0.5846	nitroalkane-rich phase
20.0	293.2	0.2424	0.6673	0.2886	0.6459	nitroalkane-rich phase
20.0	293.2	0.1637	0.7297	0.1992	0.7218	nitroalkane-rich phase
20.0	293.2	0.0843	0.7860	0.1051	0.7965	nitroalkane-rich phase
40.0	313.2	0.8695	0.0882	0.8992	0.0742	nitroalkane-rich phase
40.0	313.2	0.7666	0.1778	0.8112	0.1530	nitroalkane-rich phase
40.0	313.2	0.6641	0.2656	0.7196	0.2340	nitroalkane-rich phase
40.0	313.2	0.5694	0.3491	0.6306	0.3144	nitroalkane-rich phase
40.0	313.2	0.4588	0.4468	0.5216	0.4130	nitroalkane-rich phase
40.0	313.2	0.3560	0.5267	0.4160	0.5005	nitroalkane-rich phase
40.0	313.2	0.2911	0.5767	0.3463	0.5579	nitroalkane-rich phase
40.0	313.2	0.2189	0.6214	0.2665	0.6151	nitroalkane-rich phase
40.0	313.2	0.1462	0.6491	0.1830	0.6608	nitroalkane-rich phase
40.0	313.2	0.0716	0.6650	0.0927	0.6998	nitroalkane-rich phase
40.0	313.2	0.0449	0.6369	0.0593	0.6845	nitroalkane-rich phase
70.0	343.2	0.8352	0.0844	0.8766	0.0720	nitroalkane-rich phase
70.0	343.2	0.7223	0.1790	0.7784	0.1568	nitroalkane-rich phase
70.0	343.2	0.6237	0.2507	0.6899	0.2255	nitroalkane-rich phase
70.0	343.2	0.5044	0.3210	0.5786	0.2994	nitroalkane-rich phase
70.0	343.2	0.3897	0.3544	0.4674	0.3456	nitroalkane-rich phase
70.0	343.2	0.2862	0.3480	0.3614	0.3573	nitroalkane-rich phase
20.0	293.2	0.0211	0.0051	0.0341	0.0067	heptane-rich phase
20.0	293.2	0.0204	0.0100	0.0330	0.0131	heptane-rich phase
20.0	293.2	0.0197	0.0166	0.0318	0.0218	heptane-rich phase
20.0	293.2	0.0188	0.0235	0.0303	0.0308	heptane-rich phase
20.0	293.2	0.0180	0.0326	0.0289	0.0425	heptane-rich phase
20.0	293.2	0.0165	0.0430	0.0264	0.0560	heptane-rich phase
20.0	293.2	0.0154	0.0512	0.0246	0.0666	heptane-rich phase
20.0	293.2	0.0138	0.0619	0.0220	0.0803	heptane-rich phase
20.0	293.2	0.0116	0.0797	0.0184	0.1029	heptane-rich phase
20.0	293.2	0.0075	0.1043	0.0118	0.1339	heptane-rich phase
40.0	313.2	0.0371	0.0082	0.0594	0.0106	heptane-rich phase
40.0	313.2	0.0400	0.0160	0.0637	0.0207	heptane-rich phase
40.0	313.2	0.0381	0.0289	0.0605	0.0373	heptane-rich phase
40.0	313.2	0.0391	0.0426	0.0617	0.0547	heptane-rich phase
40.0	313.2	0.0359	0.0599	0.0565	0.0767	heptane-rich phase
40.0	313.2	0.0381	0.0814	0.0595	0.0835	heptane-rich phase
40.0	313.2	0.0381	0.0971	0.0591	0.1226	heptane-rich phase
40.0	313.2	0.0369	0.1147	0.050	0.1441	heptane-rich phase
40.0	313.2	0.0347	0.1557	0.0530	0.1934	heptane-rich phase
40.0	313.2	0.0272	0.2506	0.0405	0.3039	heptane-rich phase
40.0	313.2	0.0242	0.2879	0.0356	0.2562	heptane-rich phase
70.0	343.2	0.0883	0.0148	0.1366	0.0186	heptane-rich phase
70.0	343.2	0.0928	0.0345	0.1422	0.0430	heptane-rich phase
70.0	343.2	0.0993	0.0588	0.1504	0.0724	heptane-rich phase
70.0	343.2	0.1094	0.0941	0.1630	0.1140	heptane-rich phase
70.0	343.2	0.1308	0.1529	0.1892	0.1798	heptane-rich phase
70.0	343.2	0.1779	0.2415	0.2444	0.2697	heptane-rich phase

Method/Apparatus/Procedure:
   The analytical method was used. Mixture of (1), (2) and (3) was placed in a thermostated cell and stirred for an hour. The composition of the phases was determined by gas chromatography.

Source and Purity of Materials:
   (1) Source not specified, pure grade reagent; distilled in 1.2 m fractionating column; b. p. = 101.2 °C; n(20 °C, D) = 1.3818,d(20 °C, 4 °C) = 1.1380.
   (2) Source not specified, pure grade reagent; distilled in 1.2 m fractionating column; b. p. = 114.0 °C; n(20 °C, D) = 1.3920, d(20 °C, 4 °C) = 1.0520.
   (3) Source not specified; pure grade reagent; distilled in 1.2 m fractionating column; b. p. = 98.4 °C; n(20 °C, D) = 1.3877, d(20 °C, 4 °C) = 0.6838.

Estimated Errors:

   Temperature: control to ± 0.1 K.