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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011-07-08 - 2011-07-11
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Specific details on test material used for the study:
No further details on the test substance available
Key result
Surface tension:
67.7 mN/m
Temp.:
20 °C
Conc.:
1 g/L
Remarks on result:
other: The surface tension result is corrected for water calibration. Solution age was 10 minutes for test No 1 and 20 minutes for test No 2.

Calibration:

The measured value of the surface tension of water: 66.0 mN/m

EC standard reading for surface tension of water: 72.75 mN/m

Calibration factor is: 72.75/66.0 = 1.102

The calibration factor is determined by measuring the surface tension of water and comparing the value obtained in literature. The corrected value is taken from a table compiled on the basis of the Harkin-Jordan correction.

The duplicate runs provided identical values.

Conclusions:
The surface tension of the test substance was determined to be 67.7 mN/m at a test concentration of 1 g/L and at 20 °C. The substance is concluded not to have surface active properties.

Description of key information

The surface tension of the test substance was determined in a GLP study according to test method EC A.5, to be 67.7 mN/m at a test concentration of 1 g/L and at 20°C, following the ring method (Younis, 2011).

Key value for chemical safety assessment

Surface tension:
67.7
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The test substance is concluded not to have surface active properties.