Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07 Mar - 04 May 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
GLP 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 in 1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
adopted in 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz,Wiesbaden, Germany
Type of method:
ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Specific details on test material used for the study:
Storage conditions: ambient temperature [< 40 °C], keep container tightly closed, protected from sunlight

Results and discussion

Surface tension
Surface tension:
ca. 46.9 mN/m
Temp.:
20 °C
Conc.:
0.9 g/L

Any other information on results incl. tables

Measurement results are shown in Table 1 below.

 

Table 1 – Measured surface tension values

Value no.

1st measurement (15 min after test solution preparation)σ[mN/m]

2nd measurement (37 min after test solution preparation)σ[mN/m]

1

47.30

46.53

2

47.26

46.50

3

47.24

46.48

4

47.22

46.46

5

47.20

46.45

6

47.19

46.43

Mean value of individual values

47.23 ± 0.03

46.48 ± 0.03

Total mean value

46.86 ± 0.38

 

Discussion

Substances with a surface tension < 60 mN/m under the conditions of the EC Method A.5 should be regarded as being surface active.

 

Conclusion

The surface tension of an aqueous solution of test item at a concentration of 90% of the saturation solubility and at 20 °C was found to be equal to 46.9 mN/m. Therefore, the test item is considered as surface-active.

Applicant's summary and conclusion