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Surface tension

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surface tension
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
GLP compliance:
yes (incl. QA statement)
Key result
Surface tension:
61.3 mN/m
20 °C
1 g/L
The surface tension of a 1.0 g/L solution of the substance in water was determined to be 61.3 mN/m at 20.0 ± 0.5 °C.
Executive summary:

The surface tension of a 1.0 g/L solution of the substance in water was studied under GLP in accordance with OECD TG 115, using a tensiometer and applying the ring method. Two test solutions were prepared by diluting an aliquot of test substance in high purity water and diluting to the proper concentration, then shaking for 70.5 hours and re-equalibrating the test solution at 20 °C. The surface tension was then determined with a tensiometer at a temperature of 20 °C, and determinations were repeated until a consistent value was obtained. The average surface tension determined for the two test solutions was 61.3 mN/m at 20 ± 0.5 °C.

Description of key information

Surface tension (tested at 1 g/L aqueous solution) = 61.3 mN/m at 20 °C (OECD TG 115, GLP)

Key value for chemical safety assessment

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

Additional information