Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-07-11 - 2016-10-27
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report Date:
2016

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
adopted July 27, 1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
May, 31 2008
Deviations:
no
Qualifier:
according to
Guideline:
other: DIN EN 14370
Version / remarks:
November 2004
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: solid
Details on test material:
- Substance type: pure substance
- Storage condition of test material: At room temperature (20 °C ± 5 °C) in the dark

Results and discussion

Surface tension
Key result
Surface tension:
36.6 mN/m
Temp.:
20 °C
Conc.:
90 other: % of the saturation solubility

Applicant's summary and conclusion

Conclusions:
The surface tension was determined in a GLP guideline study according to OECD 115, EU method A.5 and DIN EN 14370 without deviations on the registered substance itself. Hence, there is no indication given that the results are not reliable.
The surface tension of an aqueous solution of the test item (90 % of the saturation solubility) was determined to be 36.6 mN/m at 20 °C ± 0.5 °C.
Executive summary:

The surface tension of Octadecanoic acid, reaction products with tetraethylenepentamine was determined by means of a ring tensiometer according to OECD 115, EU method A.5 and DIN EN 14370. The surface tension of an aqueous solution of the test item (90 % of the saturation solubility) was determined to be 36.6 mN/m at 20 °C ± 0.5 °C. Surface tension of water was 72.9 mN/m at 20 °C ± 0.4 °C, hence, the substance has to be regarded as surface active substance.