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Diss Factsheets

Physical & Chemical properties

Surface tension

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surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26-28 August 2002
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
other: 92/69/EWG, A.5 (Ringmethode)
GLP compliance:
yes (incl. QA statement)
Other quality assurance:
other: In-house quality assurance: study was periodically inspected and properly signed records of i nspections were submitted to testing facility management and the study director; report has been au dited by the Quality Assurance Unit.
Type of method:
ring method
Key result
Surface tension:
64.3 mN/m
20 °C
1 000 mg/L

A graphical illustration of the time dependance of the surface tension from the age of the solution is attached.

The surface tension of the test substance was calculated from the mean value of the last five measured values and in consideration of the calibration factor of the apparatus and the correction according to Harkins-Jordan.

Mean value (corrected according to Harkins-Jordan): 63.29 mN/m

Mean value * calibration factor: 64.25 mN/m

Final value: 64.3 mN/m

The surface tension of the test item is 64.3 mN/m at 20 °C.
Executive summary:

The surface tension of the test item was determined in a GLP study according to EU test method A.5 and OECD testing guideline 115. The surface tension of the test item is 64.3 mN/m. Based on these results, the test item is not a surfactant.

Description of key information

The surface tension of the test item is 64.3 mN/m.

Key value for chemical safety assessment

Surface tension:
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

Based on the results obtained in a GLP study according to accepted testing guidelines, the test item is not a surfactant.