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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12-05-2014 to 12-08-2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study performed under GLP. All relevant validity criteria were met.
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
yes
Type of method:
ring method
Surface tension:
52.3 mN/m
Temp.:
20 °C
Conc.:
90 vol%
Remarks on result:
other: mean determined surface tension, multiplied by Φb (calibration factor) and with Harkins-Jordan correction

Surface tension of the test item

Measurement

Time passed

[minutes]

Surface tension [mN/m]

individual

mean #1

mean multiplied by Φb and Harkins-Jordan corrected value

1

2

3

4

5

6

15

16

17

18

19

20

54.9

53.5

53.7

53.6

53.5

53.4

53.5

52.3

 #1 Mean calculated from measurements 2 to 6, after equilibrium was reached

Conclusions:
The surface tension of a test solution at 90% saturation in water has been determined to be 52.3 mN/m at 20.0 ± 0.5 °C. The test item is considered to be surface-active.
Executive summary:

The surface tension was determined using the ring method of EU Method A.5 and OECD 115 under GLP. Substances showing a surface tension lower than 60 mN/m under the conditions of this method, should be regarded as being surface active. The surface tension of a test solution at 90% of the test item saturation solubility in water has been determined to be 52.3 mN/m at 20.0 ± 0.5 °C. The item is considered to be a surface-active.

Description of key information

Surface Tension: 52.3 mN/m at 20.0 ± 0.5 °C in 90% saturated solution, EU Method A.5, 2014

Key value for chemical safety assessment

Additional information

Key Study : EU Method A.5, 2014 : The surface tension was determined using the ring method of EU Method A.5 and OECD 115 under GLP. Substances showing a surface tension lower than 60 mN/m under the conditions of this method, should be regarded as being surface active. The surface tension of a test solution at 90% of the test item saturation solubility in water has been determined to be 52.3 mN/m at 20.0 ± 0.5 °C. The item is considered to be a surface-active.