Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 30, 2008 - October 1, 2008
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report Date:
2009

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
signed 2006-06-01
Type of method:
ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): Symrose, (cis/trans) 4-(3-methylbutyl)cyclohexanol
- Substance type: technical product
- Physical state: liquid
- Storage condition of test material: ambient temperature, dark, dry

Results and discussion

Surface tension
Surface tension:
30.68 mN/m
Temp.:
19.9 °C
Conc.:
92.8 mg/L

Any other information on results incl. tables

For time line and time dependence of the measured surface tension, see attachment.

Table 1: Surface tension, temperature

Measurement No.*

Time [min] **

Surface tension [mN/m]

Temperature [°C]

1

41.4

30.59

19.9

2

42.1

30.65

3

42.7

30.63

4

43.3

30.67

5

44.0

30.69

6

44.6

30.70

7

45.3

30.70

8

45.9

30.73

9

46.6

30.74

10

47.2

30.74

MV

-

30.68

SD

-

0.05

* last 10 measurements

** time from transfer of the test solution into the test vessel till end of each measurement

 

Validation:

The surface tension of the reference item hexane was determined on 2008-01-07 with 18.36 ± 0.01mN/m at a temperature range of 19.9 – 20.0 °C. This value is in the range of tolerance of ± 1mN/m acc. to the literature value of 18.42 ± 0.02mN/m at 20 °C.

Applicant's summary and conclusion

Conclusions:
The surface tension of an aqueous solution of 90 % of the saturation solubility of Symrose was determined to be 30.68 ± 0.05 mN/m at a temperature of 19.9 °C. Due to the fact that the surface tension is < 60 mN/m, the test item has surface active properties.