IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Nitromethane with Butanoic acid and Water

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Components:
   (1) Nitromethane; CH3NO2 ; [75-52-5]  NIST Chemistry WebBook for detail
   (2) Butanoic acid; C4H8O2; [107-92-6]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Maslovskaya, N. V.; Dissertation, Kalinin University, 1974.

Variables:
   Temperature = 293 K and 313 K

Prepared By:
   V. P. Sazonov

Experimental Data:   (Notes on the Nomenclature)
  

Table 1. Mutual solubility of nitromethane, butanoic acid, and water

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
40.0	313.2	0.1000	0.0000	0.0320	0.0000
40.0	313.2	0.1210	0.0500	0.0408	0.0117
40.0	313.2	0.1345	0.0710	0.0468	0.0171
40.0	313.2	0.1420	0.0880	0.0505	0.0217
40.0	313.2	0.1654	0.1245	0.0622	0.0325
40.0	313.2	0.2380	0.2050	0.1050	0.0627
40.0	313.2	0.2997	0.2583	0.1517	0.0906
40.0	313.2	0.3266	0.2733	0.1745	0.1012
40.0	313.2	0.3570	0.2840	0.2017	0.1112
40.0	313.2	0.3930	0.2840	0.2334	0.1168
40.0	313.2	0.4299	0.2816	0.2683	0.1218
40.0	313.2	0.4585	0.2785	0.2973	0.1251
40.0	313.2	0.5630	0.2430	0.4055	0.1212
40.0	313.2	0.6280	0.2140	0.4788	0.1131
40.0	313.2	0.6870	0.1885	0.5543	0.1054
40.0	313.2	0.7854	0.1276	0.6721	0.0757
40.0	313.2	0.8380	0.0940	0.7393	0.0575
40.0	313.2	0.8560	0.0737	0.7475	0.0446
40.0	313.2	0.8798	0.0587	0.7794	0.0360
40.0	313.2	0.9058	0.0377	0.8064	0.0232
40.0	313.2	0.9300	0.0189	0.8332	0.0177
40.0	313.2	0.9600	0.0000	0.8760	0.0000

Table 2. Compositions of coexisting liquid phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)	Comment(s)
20.0	293.2	0.960	0.017	0.913	0.011	nitromethane-rich phase
20.0	293.2	0.830	0.112	0.757	0.071	nitromethane-rich phase
20.0	293.2	0.695	0.208	0.595	0.123	nitromethane-rich phase
20.0	293.2	0.525	0.310	0.404	0.165	nitromethane-rich phase
20.0	293.2	0.415	0.362	0.292	0.176	nitromethane-rich phase
20.0	293.2	0.376	0.374	0.253	0.175	nitromethane-rich phase
20.0	293.2	0.869	0.068	0.769	0.042	nitromethane-rich phase
20.0	293.2	0.806	0.112	0.694	0.067	nitromethane-rich phase
20.0	293.2	0.687	0.188	0.554	0.105	nitromethane-rich phase
20.0	293.2	0.518	0.260	0.357	0.124	nitromethane-rich phase
20.0	293.2	0.392	0.285	0.253	0.128	nitromethane-rich phase
20.0	293.2	0.091	0.006	0.029	0.001	water-rich phase
20.0	293.2	0.100	0.046	0.033	0.011	water-rich phase
20.0	293.2	0.103	0.060	0.035	0.014	water-rich phase
20.0	293.2	0.111	0.090	0.039	0.022	water-rich phase
20.0	293.2	0.117	0.110	0.042	0.027	water-rich phase
20.0	293.2	0.122	0.130	0.044	0.033	water-rich phase
20.0	293.2	0.114	0.032	0.038	0.007	water-rich phase
20.0	293.2	0.130	0.060	0.045	0.014	water-rich phase
20.0	293.2	0.136	0.075	0.048	0.018	water-rich phase
20.0	293.2	0.141	0.082	0.050	0.020	water-rich phase
20.0	293.2	0.147	0.090	0.053	0.022	water-rich phase

Method/Apparatus/Procedure:
   Two methods were used. The solubility curve was determined by the titration method. The analytical method was used, samples being withdrawn from coexisting liquid phases at equilibrium for analysis by refractometry.

Source and Purity of Materials:
   (1) Source not specified, pure grade reagent; distilled; b.p. = 101.0 °C; n(20 °C, D) = 1.3818, d(20 °C, 4 °C) = 1.1385.
   (1) Source not specified, dried and distilled; b.p. = 162.6 °C; n(20 °C, D) = 1.3995, d(20 °C, 4 °C) = 0.9620.
   (3) Doubly distilled.

Estimated Errors:

   Temperature: not reported.

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Last updated: February 18, 2015 (Created: August 17, 2007)