Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Nov 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Type of method:
plate method

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Surface tension
Surface tension:
ca. 44.5 mN/m
Temp.:
20 °C
Conc.:
90 other: % of saturation

Any other information on results incl. tables

Results

Results of duplicate measurements were:

#1

44.39 ± 0.05 mN/m

#2

44.51 ± 0.03 mN/m

 

Taking into account the different values and their nominal uncertainty, the uncertainty of the mean value (44.5 mN/m) is estimated as 0.1 mN/m.

 

The surface tension of n-butylparaben at 90% of the saturation and 20 °C is 44.5±0.01 mN/m.

The substance is surface active.

Applicant's summary and conclusion