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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:
2016-05-10 to 2016-05-27
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Key result
Surface tension:
43.8 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Surface tension of the separate solutions was determined with three replicate measuring from each.

Table 1 Data corrected automatically by Harkins-Jordan correction factor

Mass of test item in 500 mL water

Temperature (°C)

Surface Tension, mN/m

0.5025

19.8

44.1

44.0

19.9

44.0

19.8

43.8

0.5012

19.8

43.7

43.6

19.8

43.5

19.7

43.5

Mean

43.8

 

Conf. Int. (95%)

0.26

 

Conclusions:
The surface tension of the test item aqueous solution (1 g/L) was found to be 43.8 mN/m at 20 °C using the ring method. The density of the test solution was determined to be 0.998 g/mL.
Executive summary:

The purpose of this study was to determine the Surface Tension of test item according to EU Method A.5 and OECD 115. In the course of this study aqueous solutions were prepared containing 1 g/L test item in water. Surface tension of these solutions was determined applying the ring method. The test was performed with the help of Krüss Easy Dyne type tensiometer. The surface tension of the test item aqueous solution (1 g/L) was found to be 43.8 mN/m at 20 °C using the ring method.

Description of key information

The surface tension of the test item aqueous solution (1 g/L) was found to be 43.8 mN/m at 20 °C using the ring method. The density of the test solution was determined to be 0.998 g/mL.

Key value for chemical safety assessment

Surface tension:
43.8
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The purpose of this study was to determine the Surface Tension of test item according to EU Method A.5 and OECD 115. In the course of this study aqueous solutions were prepared containing 1 g/L test item in water. Surface tension of these solutions was determined applying the ring method. The test was performed with the help of Krüss Easy Dyne type tensiometer. The surface tension of the test item aqueous solution (1 g/L) was found to be 43.8 mN/m at 20 °C using the ring method.