Section: 6 | Surface Tension of Aqueous Mixtures |

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SURFACE TENSION OF AQUEOUS MIXTURES

The composition dependence of the surface tension of binary mixtures of several compounds with water is given in this table. The data are tabulated as a function of the mass percent of the non-aqueous component. Data for methanol, ethanol, 1-propanol, and 2-propanol are taken from Ref. 1, which also gives values at other temperatures. Column definitions for the table are as follows.

Column heading	Definition
Name	Name of compound in aqueous mixture; compounds are listed alphabetically by name
t	Temperature for surface tension data, in °C
γ (mass %)	Surface tension, in mN m^-1, of aqueous mixture with compound concentration specified in parentheses as mass %

References

Vazquez, G., Alvarez, E., and Navaza, J. M., J. Chem. Eng. Data, 40, 611, 1995. [https://doi.org/10.1021/je00019a016]
Landolt-Börnstein, Numerical Data and Functional Relationships in Science and Technology, New Series, IV/16, Surface Tension, Springer-Verlag, Heidelberg, 1997.

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Surface Tension for Compounds in Water as a Function of Concentration

Name	Synonym	Mol. form.	CAS Reg. No.	Mol. wt.	t/ºC	γ(0%)/mN m^-1	γ(10%)/mN m^-1	γ(20%)/mN m^-1	γ(30%)/mN m^-1	γ(40%)/mN m^-1	γ(50%)/mN m^-1	γ(60%)/mN m^-1	γ(70%)/mN m^-1	γ(80%)/mN m^-1	γ(90%)/mN m^-1	γ(100%)/mN m^-1
Continued on next page...
Acetic acid	Ethanoic acid	C₂H₄O₂	64-19-7	60.052	30	71.2	51.4	43.3	41.2	38.2	37.4	36.1	33.5	31.5	30.2	26.3
Acetone	2-Propanone	C₃H₆O	67-64-1	58.079	25	72.0	44.9	40.5	36.7	33.0	30.1	29.4	29.4	27.6	24.5	23.1
Acetonitrile	Methyl cyanide	C₂H₃N	75-05-8	41.052	20	72.8	48.5	40.2	34.1	31.6	30.6	30.0	29.6	29.1	28.7	28.4
1,2-Butanediol, (±)-		C₄H₁₀O₂	26171-83-5	90.121	25	72.0	66.1	60.4	55.1	50.1	45.6	43.3	41.9	40.8	39.2	35.8
1,3-Butanediol, (±)-		C₄H₁₀O₂	18826-95-4	90.121	30	71.2	58.1	51.6	48.7	45.8	43.9	42.4	41.2	40.0	39.0	37.0
1,4-Butanediol	Tetramethylene glycol	C₄H₁₀O₂	110-63-4	90.121	30	71.2	61.2	56.9	54.2	52.0	50.7	49.5	47.9	46.6	45.2	43.8
Butanoic acid	Butyric acid	C₄H₈O₂	107-92-6	88.106	30	71.2	42.4	37.5	35.5	34.8	32.2	30.8	29.2	27.4	26.3	25.5
2-Butanone	Methyl ethyl ketone	C₄H₈O	78-93-3	72.106	20	72.8	41.6	32.2				25.2				24.6
γ-Butyrolactone	Oxolan-2-one	C₄H₆O₂	96-48-0	86.090	30	71.2	64	58	53	50	48	46	45	44	42.8	42.7
Chloroacetic acid		C₂H₃ClO₂	79-11-8	94.497	25	72.0	59.8	53.6	51.3	49.7	48.3	47.5	46.1
Diethanolamine	Bis(2-hydroxyethyl)amine	C₄H₁₁NO₂	111-42-2	105.136	25	72.0	66.8	63.2	60.7	58.8	57.2	55.7	54.3	52.7	50.6	47.2
N,N-Dimethylacetamide	N,N-Dimethylethanamide	C₄H₉NO	127-19-5	87.120	25	72.0	72.0	72.0	72.4	73.5	74.9	75.4	73.0	65.7	54.7	36.4
N,N-Dimethylformamide	DMF	C₃H₇NO	68-12-2	73.094	25	72.0	65.4	59.2	53.8	49.6	47.3	46.9	44.9	42.3	38.4	35.2
1,4-Dioxane	1,4-Dioxacyclohexane	C₄H₈O₂	123-91-1	88.106	25	72.0					41.2	39.6	37.9	36.2	34.5	33.7
1,2-Ethanediol	Ethylene glycol	C₂H₆O₂	107-21-1	62.068	20	72.8	68.5	64.9	61.9		57.0					48.2
Ethanol	Ethyl alcohol	C₂H₆O	64-17-5	46.068	25	72.01	47.53	37.97	32.98	30.16	27.96	26.23	25.01	23.82	22.72	21.82
Formic acid	Methanoic acid	CH₂O₂	64-18-6	46.026	20	72.8	66	60	55.7	52.2	50.3	48.8	47.1	44.7	40.9	38.0
Glycerol	1,2,3-Propanetriol	C₃H₈O₃	56-81-5	92.094	25	72.0	70.5	69.5	68.5	67.9	67.4	66.9	66.5	65.7	64.5	62.5
Methanol	Methyl alcohol	CH₄O	67-56-1	32.042	25	72.01	56.18	47.21	41.09	36.51	32.86	29.83	27.48	25.54	23.93	22.51

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SURFACE TENSION OF AQUEOUS MIXTURES

References

Surface Tension for Compounds in Water as a Function of Concentration

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