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Physical & Chemical properties

Surface tension

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Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 February 2020 to 13 March 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
27 July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
4 March 2016
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
- Purity/Composition correction factor: No correction factor required
Key result
Surface tension:
58.13 mN/m
Temp.:
20 °C
Conc.:
90 vol%

Surface Tension of the Test Material

Measurement

Time passed after
measurement start
(seconds)

Surface tension (mN/m)

Individual σ multiplied by Harkins-Jordan corrected value

Mean σ

1

39

58.27

58.13

2

64

58.14

3

90

58.09

4

116

58.06

5

142

58.07

 

The individual measurements were obtained with a coefficient of variation of ≤0.2 mN/m.

Conclusions:
Under the conditions of the study the surface tension of a test solution at 90 % of the test material saturation solubility in water and at 20 °C was 58.13 mN/m. As the surface tension was < 60 mN/m, the test material is considered to be surface active.
Executive summary:

The surface tension of the test material was investigated in a study which was conducted in accordance with the standardised guidelines OECD 115 and EU Method A.5, under GLP conditions, following the OECD harmonised ring method.

Under the conditions of the study the surface tension of a test solution at 90 % of the test material saturation solubility in water and at 20 °C was 58.13 mN/m. As the surface tension was < 60 mN/m, the test material is considered to be surface active.

Description of key information

Under the conditions of the study the surface tension of a test solution at 90 % of the test material saturation solubility in water and at 20 °C was 58.13 mN/m. As the surface tension was < 60 mN/m, the test material is considered to be surface active.

Key value for chemical safety assessment

Additional information

The surface tension of the test material was investigated in a study which was conducted in accordance with the standardised guidelines OECD 115 and EU Method A.5, under GLP conditions, following the OECD harmonised ring method. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

Under the conditions of the study the surface tension of a test solution at 90 % of the test material saturation solubility in water and at 20 °C was 58.13 mN/m. As the surface tension was < 60 mN/m, the test material is considered to be surface active.