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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:
23 September - 16 November 2016
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
according to guideline
EU Method A.5 (Surface Tension)
GLP compliance:
Type of method:
ring method
Specific details on test material used for the study:
- Analytical purity: 94.55 %
- Expiration date: 31 December 2017
- Storage condition: at room temperature
Key result
Surface tension:
35.8 mN/m
20 °C
1 g/L

The calibration factor for the torsion balance at 20°C was 1.0034.

The measured mean surface tension of a nominal 1 g/L solution of the test substance was 38.1 mN/m (mean of 38.0, 38.0, 38.0, 38.0 and 38.5 mN/m) at 20°C.

The corrected surface tension was; 38.2 mN/m.

The surface tension was <60 mN/m. Therefore, the Harkins-Jordan correction was applied and the corrected surface tension was 35.8 mN/m.

The surface tension of the substance was determined to be 35.8 mN/m at a test concentration of 1 g/L and at 20°C.

Description of key information

Based on a GLP study (K1, Foster, 2016) according to the EU method A.5 and OECD guideline 115, the surface tension was determined to be 35.8 mN/m at a test concentration of 1 g/L and at 20°C.

Key value for chemical safety assessment

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

Additional information