Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 6 March to 20 September 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: According to the OECD Guideline and it is GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report Date:
2013

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
yes
Remarks:
A platinum ring with a reduced circumference of 4 cm was used, whereas the guidelines specify 6 cm. This procedure with respect to the reduced ring dimensions has been considered not to have affected the integrity of the test.
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
yes
Remarks:
A platinum ring with a reduced circumference of 4 cm was used, whereas the guidelines specify 6 cm. This procedure with respect to the reduced ring dimensions has been considered not to have affected the integrity of the test.
GLP compliance:
yes (incl. certificate)
Type of method:
ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Physical state: clear colorless liquid
- Storage condition of test material: room temperature in the dark

Results and discussion

Surface tension
Surface tension:
40.7 mN/m
Temp.:
21.8 °C

Any other information on results incl. tables

Sample A

Time (mins)   Reading (mN/m)  Temperature (ºC)
 64  40.5  21.8
 77  40.5  21.8
 96  40.5  21.8
 108  41.0  21.8
 136  41.0  21.8

Mean sample reading = 40.7 mN/m (all five readings)

Sample B

Time (mins)   Reading (mN/m)  Temperature (ºC)
 69 41.0  21.8
 82 40.5  21.8
99 40.5  21.8
119 40.5  21.8
142 41.0  21.8

Mean sample reading = 40.7 mN/m (all five readings)

Applicant's summary and conclusion

Conclusions:
The surface tension of duplicate 90% saturated solutions of test item in water has been determined to be 40.7±0.5 mN/m at 21.8±0.5ºC. The test item is considered to be surface-active.
Executive summary:

The surface tension of duplicate 90% saturated solutions of test item in water has been determined to be 40.7±0.5 mN/m at 21.8±0.5ºC, using a ring method, designed to be compatible with Method A5 and Method 115 of the OECD Guideline. The test item is considered to be surface-active.