Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29 April - 25 July, 2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study has been performed according to OECD and/or EC guidelines and according to GLP principles.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report Date:
2008

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Surface tension
Surface tension:
48.8 mN/m
Temp.:
20 °C
Remarks on result:
other: A saturated aqueous solution of the poorly soluble substance was produced by stirring the substance for 17 hours. After removing excess substance, 90 ml of the aqueous phase was mixed with 10 ml water to obtain a 90 % solution.

Applicant's summary and conclusion

Conclusions:
The OECD harmonized ring method was used for the determination of the surface tension. The surface tension of a test solution at 90 % of the test substance saturation solubility in water 20.0 °C was 48.8 mN/m. Since this value is below the value as stated in the guideline, i.e. < 60 mN/m, the test substance is considered to be surface active.