IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Methanol with Butane (n-butane) and water

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Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Butane (n-butane); C4H10; [106-97-8]  NIST Chemistry WebBook for detail
   (3) Methanol (methyl alcohol); CH4O; [67-56-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Noda, K.; Sato, K.; Nagatsuka, K.; Ishida, K., J. Chem. Eng. Jpn. 8, 492-3 (1975).

Variables:
   Temperature = 273 K - 293 K

Prepared By:
   A. Skrzecz

Experimental Data:   (Notes on the Nomenclature)
  

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mass Fraction w3	Mole Fraction x1 (compiler)	Mole Fraction x3 (compiler)	Comment(s)
0.0	273.2	0.006	0.994	0.0003	0.011	0.988	organic-rich phase
0.0	273.2	0.011	0.989	0.0004	0.020	0.979	organic-rich phase
0.0	273.2	0.021	0.978	0.0006	0.037	0.961	organic-rich phase
0.0	273.2	0.036	0.963	0.0007	0.063	0.934	organic-rich phase
0.0	273.2	0.058	0.941	0.0008	0.100	0.897	organic-rich phase
0.0	273.2	0.061	0.938	0.0008	0.105	0.892	organic-rich phase
20.0	293.2	0.004	0.996	0.0004	0.007	0.991	organic-rich phase
20.0	293.2	0.008	0.991	0.0006	0.014	0.984	organic-rich phase
20.0	293.2	0.011	0.988	0.0007	0.020	0.978	organic-rich phase
20.0	293.2	0.013	0.986	0.0008	0.023	0.974	organic-rich phase
20.0	293.2	0.023	0.976	0.001	0.041	0.956	organic-rich phase
20.0	293.2	0.034	0.965	0.001	0.060	0.937	organic-rich phase
20.0	293.2	0.047	0.951	0.0015	0.082	0.914	organic-rich phase
20.0	293.2	0.071	0.927	0.002	0.121	0.873	organic-rich phase

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)	Comment(s)
0.0	273.2	0.707	0.015	0.584	0.007	water-rich phase
0.0	273.2	0.805	0.039	0.729	0.019	water-rich phase
0.0	273.2	0.834	0.082	0.811	0.044	water-rich phase
0.0	273.2	0.824	0.130	0.843	0.073	water-rich phase
0.0	273.2	0.772	0.206	0.835	0.123	water-rich phase
0.0	273.2	0.764	0.218	0.834	0.131	water-rich phase
20.0	293.2	0.396	0.003	0.270	0.001	water-rich phase
20.0	293.2	0.644	0.011	0.510	0.005	water-rich phase
20.0	293.2	0.737	0.022	0.626	0.010	water-rich phase
20.0	293.2	0.753	0.027	0.650	0.013	water-rich phase
20.0	293.2	0.797	0.046	0.723	0.023	water-rich phase
20.0	293.2	0.787	0.105	0.759	0.056	water-rich phase
20.0	293.2	0.768	0.163	0.783	0.092	water-rich phase
20.0	293.2	0.675	0.289	0.751	0.177	water-rich phase

Method/Apparatus/Procedure:
   The analytical method was used, similar to that reported in Ref. 1. Samples of each phase were analyzed by glc on a 3 mm diameter by 3 m long column packed with Poropak R and using H₂ as a carrier gas. Each sample was injected several times and the composition was determined from chromatogram areas. Care was taken to avoid contamination by the surroundings, especially water vapor.

Source and Purity of Materials:
   (1) Source not specified, commercially available; guaranteed reagent; used as received.
   (1) Takachiho Chemical Industry Co., Ltd; standard reagent; used as received.
   (3) Distilled

Estimated Errors:
   Solubility: Not reported.
   Temperature: Not reported.

References:
   ¹ K. Ishida, Bull. Chem. Soc. Jpn. 29, 956 (1956).

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