Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28 March 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to EU & OECD test guidance in compliance with GLP and reported with a valid GLP certificate.

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:
EU Method A.5 (Surface Tension)
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Name: Reactive Red F08-0146

Results and discussion

Surface tension
Surface tension:
72.1 mN/m
Temp.:
20 °C
Conc.:
1 000 mg/L

Any other information on results incl. tables

The surface tension of Reactive Red F08-0146 aqueous solution read on the instrument was 71.9 mN/m at 20°C, using the OECD harmonised ring method representing the mean of five separate measurements. The equilibrium time for these five measurements was minimum 124 sec. The details are shown in the table below:

Measured surface tension values and equilibrium times

Surface tension (mN/m)

Equilibrium time (sec)

72.0

124

72.0

125

71.8

124

71.9

126

72.0

125

Mean: 71.9     Corrected value:72.1

Equilibrium time = time after transferring the solution to the vessel until measuring the surface tension of the solution

 

The measured surface tension was multiplied by the correction factor and then corrected according to Harkins and Jordan, resulting in a corrected surface tension of 72.1 mN/m.

Applicant's summary and conclusion

Conclusions:
The surface tension of Reactive Red F08-0146 aqueous solution (1 mg/ml) was found to be 72.1 mN/m at 20 ±1°C, using the OECD harmonised ring method. As this value is higher than 60 mN/m, Reactive Red F08-0146 is not classified as surface-active material.
Executive summary:

This study has been performed in accordance with the study plan, Directive of the European Communities: Methods for the Determination of Physico-Chemical Properties (A5), Guidelines for Testing of Chemicals of the Organization for Economic Co-operation and Development (OECD Guideline No. 115), the Principles of Good Laboratory Practice (GLP) and reported with a valid GLP certificate.

 

The surface tension of Reactive Red F08-0146 aqueous solution (1 mg/ml) was found to be 72.1 mN/m at 20 ±1°C, using the OECD harmonised ring method. As this value is higher than 60 mN/m, Reactive Red F08-0146 is not classified as surface-active material.