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Surface tension
Administrative data
Link to relevant study record(s)
Description of key information
Surface tension of a 5.3 mg/L solution at 20 °C was 72.1 mN/m (not surface active); OECD 115 and EU Method A.5
Key value for chemical safety assessment
- Surface tension:
- 72.1
- in mN/m at 20°C and concentration in mg/L:
- 5.3
Additional information
The surface tension of the test material was investigated in accordance with the standardised guidelines OECD 115 and EU Method A.5 under GLP conditions using the OECD harmonised ting method. The study was awarded a reliability score of 1 in accordance with the principles for assessing data quality set forth by Klimisch et al. (1997).
The system consisted of a model K6 tensiometer, platinum-iridium ring with a wire radius of 0.185 mm and a ring radius of 9.545 mm and a cylindrical glass vessel with an inside diameter of 45 mm.
A test solution of the test material was prepared in double distilled water at a concentration of 5.3 mg/L was stirred at 19.9 ± 0.3 °C for 24 hours. The test material solution was clear.
The surface tension of the test material was determined using the tensiometer. Five measurements were performed until a constant value on the surface tension was reached (< 0.5 mN/m). The passage of time since the solution was transferred to the measurement vessel was recorded for each measurement. The test was performed at 20.0 ± 0.5 °C.
Under the conditions of this study, the surface tension of a test solution at a concentration of 5.3 mg/L at 20 °C was 72.1 mN/m. The test material is considered not to be surface active.
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