Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26 Mar - 19 Apr 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
adopted in March 04, 2016
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
adopted in July 27, 1995
GLP compliance:
yes
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid
Specific details on test material used for the study:
Test item storage:
At room temperature protected from light

Results and discussion

Surface tension
Surface tension:
68.3 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Any other information on results incl. tables

The results of the test on the determination of the surface tension of the test solution are given in Table 4.

Table 4: Surface Tension of the Test Item

Measurement

Time passed after transfer test solution to test vessel [minutes]

Surface tension

[mN/m]

individual

mean

mean multiplied by Φband Harkins-Jordan corrected value

1

15

70.4

70.2

68.3

2

16

70.0

3

17

70.2

4

18

70.1

5

19

70.2

 

Conclusion

The OECD harmonized ring method was applied for the determination of the surface tension of N-ethylcaprolactam.

The surface tension of a test solution at a concentration of 1 g/L in water and at 20°C was 68.3 mN/m. According to this, the test item is considered not to be surface active.

Applicant's summary and conclusion