Registration Dossier

Diss Factsheets

Physical & Chemical properties

Surface tension

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007.08.31 to 2007.11.29
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study performed in accordance with recognized test guideline.
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
(Platinium ring)
Principles of method if other than guideline:
NA
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Surface tension:
71.5 mN/m
Temp.:
20 °C
Conc.:
1 044 mg/L

The apparatus was calibrated with double-distilled water. The surface tension of the water was measured to be 72.75 mN/m at 20°C and as the literature value for this temperature is 72.75 the calibration factor is 1.000.

The surface tension of L-TEE was calculated as a mean value of 5 readings. The mean surface tension was calculated to be 71.5 mN/m for a test solution of 1 g/L at 20°C. As the value is significantly above 60 mN/m, correction using the Harkins-Jordan correction table was not necessary.

Conclusions:
The surface tension at 20°C of a nominal 1 g/L solution of L-TEE in double-destilled water was determined to be 71.5 mN/m. L-TEE is not a surface active substance.
Executive summary:

The surface tension of L-TEE was measured in accordance with Directive 92/69/EEC method A5 and OECD Guideline 115 (platinium ring).

The apparatus used, White Instruments Surface Tension (torsion) Balance, was calibrated using double-distilled water. The calibration factor was determined to be 1.000.

The mean surface tension was measured to be 71.5 mN/m for a test solution of 1 g/L at 20°C. As the value is significantly above 60 mN/m, correction using the Harkins-Jordan correction table was not necessary.

Description of key information

The surface tension of L-TEE is 71.5 mN/m for a 1 g/L at 20°C.

Key value for chemical safety assessment

Surface tension:
71.5
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The surface tension of L-TEE was measured in accordance to Directive 92/69/EEC Method A5 and OECD Guideline 115 (platinium ring).

The apparatus used, White Instruments Surface Tension (torsion) Balance, was calibrated using double-distilled water. The calibration factor was determined to be 1.000.

The mean surface tension was measured to be 71.5 mN/n for a test substance concentration of 1 g/L at 20°C. As the value is significantly above 60 mN/m, correction using the Harkins-Jordan correction table was not necessary.