IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: 2-Propanol with Cyclohexane and Water

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Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 2-Propanol (isopropanol, isopropyl alcohol); C3H8O; [67-63-0]  NIST Chemistry WebBook for detail
   (3) Cyclohexane; C6H12; [110-82-7]  NIST Chemistry WebBook for detail

Original Measurements:
   Nikurashina, N.I.; Sinegubova, S.I., Zh. Obshch. Khim. 43, 2100 (1973).

Variables:
   Temperature = 298 K

Prepared By:
   A. Skrzecz

Experimental Data:   (Notes on the Nomenclature)
  

Compositions along the saturation curve

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
25	298.2	0.3481	0.0054	0.1388	0.0015
25	298.2	0.3912	0.0109	0.1634	0.0033
25	298.2	0.4942	0.0506	0.2412	0.0176
25	298.2	0.5363	0.0927	0.2915	0.0360
25	298.2	0.5502	0.1350	0.3243	0.0568
25	298.2	0.5540	0.1784	0.3520	0.0809
25	298.2	0.5478	0.2261	0.3743	0.1103
25	298.2	0.5287	0.2928	0.3966	0.1568
25	298.2	0.4960	0.3528	0.3961	0.2012
25	298.2	0.4782	0.3861	0.3963	0.2285
25	298.2	0.4725	0.3956	0.3954	0.2364
25	298.2	0.4687	0.4198	0.4110	0.2629
25	298.2	0.4561	0.4242	0.3938	0.2615
25	298.2	0.4448	0.4442	0.3928	0.2801
25	298.2	0.4504	0.4397	0.3982	0.2776
25	298.2	0.4306	0.4669	0.3894	0.3015
25	298.2	0.4080	0.5032	0.3836	0.3378
25	298.2	0.3722	0.5583	0.3712	0.3976
25	298.2	0.2885	0.6733	0.3217	0.5362
25	298.2	0.1965	0.7861	0.2408	0.6880

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)	Comment(s)
25	298.2	0.00016	0.9981	0.0022	0.9964	hydrocarbon-rich phase
25	298.2	0.0042	0.9953	0.0059	0.9918	hydrocarbon-rich phase
25	298.2	0.0083	0.9910	0.0116	0.9852	hydrocarbon-rich phase
25	298.2	0.0233	0.9759	0.0322	0.9641	hydrocarbon-rich phase
25	298.2	0.0450	0.9534	0.0615	0.9312	hydrocarbon-rich phase
25	298.2	0.0800	0.9170	0.1074	0.8792	hydrocarbon-rich phase
25	298.2	0.1233	0.8708	0.1612	0.8130	hydrocarbon-rich phase
25	298.2	0.1650	0.8239	0.2088	0.7444	hydrocarbon-rich phase
25	298.2	0.2050	0.7777	0.2506	0.6789	hydrocarbon-rich phase
25	298.2	0.2350	0.7407	0.2781	0.6259	hydrocarbon-rich phase
25	298.2	0.2667	0.7015	0.3053	0.5733	hydrocarbon-rich phase
25	298.2	0.3083	0.6467	0.3350	0.5018	hydrocarbon-rich phase
25	298.2	0.3283	0.6191	0.3471	0.4674	hydrocarbon-rich phase
25	298.2	0.4504	0.4397	0.3982	0.2776	hydrocarbon-rich phase
25	298.2	0.0516	0.0003	0.0161	0.0001	water-rich phase
25	298.2	0.1000	0.0007	0.0323	0.0002	water-rich phase
25	298.2	0.1383	0.0015	0.0460	0.0004	water-rich phase
25	298.2	0.1833	0.0020	0.0632	0.0005	water-rich phase
25	298.2	0.2316	0.0025	0.0831	0.0006	water-rich phase
25	298.2	0.2916	0.0035	0.1102	0.0009	water-rich phase
25	298.2	0.3650	0.0074	0.1481	0.0021	water-rich phase
25	298.2	0.4450	0.0240	0.1992	0.0077	water-rich phase
25	298.2	0.5033	0.0571	0.2503	0.0203	water-rich phase
25	298.2	0.5366	0.0988	0.2943	0.0387	water-rich phase
25	298.2	0.5533	0.1601	0.3408	0.0704	water-rich phase
25	298.2	0.5516	0.2205	0.3754	0.1072	water-rich phase
25	298.2	0.5450	0.2556	0.3913	0.1311	water-rich phase
25	298.2	0.4504	0.4397 (a)	0.3982	0.2776	water-rich phase

Notes:
   ^a  Critical solubility point.

Method/Apparatus/Procedure:
   The isothermal titration method was used. No more details were reported in the paper.

Source and Purity of Materials:
   (1) Source not specified, pure grade; used as received; b.p.=82°C, n(25°C,D)=1.3752.
   (2) Source not specified; distilled at 80.8°C; n(25°C,D)=1.4238.
   (3) Doubly distilled.

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

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