Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November 22-26, 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study was conducted in accordance with OECD guidance and GLP criteria. 90% saturation cannot be guaranteed, however solubility limit is low enough to allow adaptation of testing requirement.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report Date:
2011

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. certificate)
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: MTDID 21721
- Physical state: liquid
- Lot/batch no.: TFEE5-276/12/09-1
- Expiration date of the lot/batch: 31 December 2012
- Storage condition of test material: Room temperature in the dark under nitrogen

Results and discussion

Surface tension
Key result
Surface tension:
71 mN/m
Temp.:
20 °C
Remarks on result:
other: 90% dilution of 96-h stirred. Actual concentration not determined. Saturation cannot be guaranteed by this method.

Any other information on results incl. tables

Six measurements (Table) were taken indicating a constant surface tension.

Table, Surface tension measurement for TFEE-5

Measurement

Time (s)

Surface tension (mN/m)

1

83

71.31

2

143

71.24

3

204

71.18

4

264

71.15

5

325

71.11

6

385

71.07

average

71.17

 

Applicant's summary and conclusion

Conclusions:
TFEE-5 does not have surfactant properties
Executive summary:

Surface tension of a water solution of TFEE-5 was measured using a ring apparatus according to OECD115 and EU Method A.5. A solution was made by stirring TFEE-5 for 96-hours, with undissolved material remaining after stirring. This solution was diluted to 90% for the test. Average surface tension measured at 20 ± 0.5 °C was 71.17 mN/m. TFEE-5 has no surfactant properties.

The test was conducted under OECD guidelines and was GLP-compliant. Saturation was assumed but cannot be guaranteed by the stirring method used. However, this test may be adapted according to column 2 of Annex VII due to water solubility. Therefore, this study is reliable with restrictions.