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Physical & Chemical properties

Surface tension

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surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29 June 2007 to 24 July 2007
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
not specified
according to guideline
EU Method A.5 (Surface Tension)
not specified
GLP compliance:
yes (incl. QA statement)
Ministerium für Umwelt und Naturschutz, Landwirtschaft und Verbraucherschutz, Düsseldorf, Nordrhein-Westfalen, Germany
Type of method:
ring method
Key result
Surface tension:
57.3 mN/m
20 °C
0.09 g/L

Individual and Final Results

Surface tension (ST) of test substance (0.09 g/L in demineralized water) at 20 °C:

Value 1               61.07 mN/m

Value 2               61.03 mN/m

Value 3               61.12 mN/m

Value 4               61.11 mN/m

Value 5               61.10 mN/m

Value 6               61.08 mN/m

Value 7               61.07 mN/m

Value 8               61.06 mN/m

Value 9               61.06 mN/m

Value 10             61.07 mN/m

Mean value:       61.08 mN/m

Correction factor 1:   0.954

ST Value (σ) after first correction:   58.27 mN/m


The second correction (Harkins and Jordan) was calculated with the following formula:

Surface tension (final corrected) = 0.00085 σ2+ 0.96115 σ - 1.594

Surface tension (final corrected) = 0.0085 * (58.27 mN/m)2+ 0.96115 * 58.27 mN/m – 1.594 = 57.3 mN/m


The surface tension of the test substance is σ =57.3 mN/m.

Description of key information

Surface tension is 57.3 mN/m at 20 ºC with 0.09 g/L solution (OECD 115, ring method).

Key value for chemical safety assessment

Surface tension:
in mN/m at 20°C and concentration in mg/L:

Additional information