Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 12 June 2017 to 20 September 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 guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Remarks:
paste
Details on test material:
Name as cited in report: DDDA TEA salt
Physical appearance: beige to pale yellow paste
Storage conditions: at room temperature

Results and discussion

Surface tension
Key result
Surface tension:
67.9 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Any other information on results incl. tables

Table: Surface tension measurements

 

Measurement

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

Surface tension
(mN/m)

individual

mean

mean (1)

1

17

68.7

68.7

67.9

2

18

68.5

 

 

3

19

68.7

 

 

4

20

68.9

 

 

5

21

68.8

 

 

(1) Multiplied by the calibration factor and Harkins-Jordan corrected.

Applicant's summary and conclusion

Conclusions:
The surface tension of an aqueous substance solution at 1 g/L was determined to be 67.9 mN/m (at 20°C).

Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension of an aqueous substance solution at 1 g/L was determined to be 67.9 mN/m (at 20°C). According to the EC A.5 guideline the substance is not surface active.