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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:
2018
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)
GLP compliance:
no
Type of method:
plate method
Key result
Surface tension:
70.1 mN/m
Temp.:
20 °C
Remarks on result:
other: 90% of the saturation concentration

Results of duplicate measurements were:

#1 69.33 ± 0.07 mN/m

#2 70.67 ± 0.08 mN/m

Taking into account the different values and their nominal uncertainty, the uncertainty of the mean

value (70.1 mN/m) is estimated as 0.7 mN/m.

The solution was 2 hours old before filtration. The dilution took place 2 hours after filtration and the subsequent measurement started 10 minutes after dilution.

Conclusions:
The surface tension at 90% of the saturation and 20 °C is 70.1± 0.7 mN/m.
Executive summary:

The surface tension of the test substance was determined according to OECD Guideline 115 with the plate method.

The surface tension at 90% of the saturation and 20 °C is 70.1± 0.7 mN/m.

Description of key information

Surface tension at 90% of the saturation and 20 °C: 70.1± 0.7 mN/m

Key value for chemical safety assessment

Surface tension:
70.1

Additional information

The surface tension of the test substance was determined according to OECD Guideline 115 with the plate method.

The surface tension at 90% of the saturation and 20 °C is 70.1± 0.7 mN/m.