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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Surface tension:
68.8 mN/m
Temp.:
20 °C
Conc.:
1 000 mg/L
Remarks on result:
other: average of final three values
Remarks:
corrected value

- Result first measurement: 68.84 mN/m

- Result second measurement: (after 30 minutes waiting/age of test solution 27 h. 30 min.): 68.91mN/m

Conclusions:
The surface tension as corrected value is 68.84 mN/m measured at 20 °C. The concentration of the test solution was 1.0 g/L.
Executive summary:

The study was performed according to guideline A.5 for detennination of the surface tension, EG-guideline 92/69 by the OECD ring method at 20 °C. The concentration of the test solution was 1.0 g/L. The calibration factor (Phi b) of pure water at 20 °C was 0.9481. Corrected results of the surface tension for the first and second measurement (after 30 minutes waiting) were 68.84 mN/m and 68.91 mN/m. The surface tension as corrected value was 68.84 mN/m (average of the final three values).

Description of key information

The surface tension as corrected value is 68.84 mN/m measured at 20 °C. The concentration of the test solution was 1.0 g/L.

Key value for chemical safety assessment

in mN/m at 20°C and concentration in mg/L:
68.84

Additional information

The corrected surface tension of 68.84 mN/m is the average of the final three values. The calibration factor (Phi b) of pure water at 20 °C was 0.9481.