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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-08-04
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
ring method
Specific details on test material used for the study:
Component of a Polyurethane System
Polyoxypropylene triamine
(39423-51-3) 60-100%
Key result
Surface tension:
52.8 mN/m
Temp.:
20 °C
Conc.:
1 g/L

The calibration factor is determined by measuring the Surface Tension of water and comparing the value obtained in literature. The corrected value is taken from a table compiled on the basis of the Harkins-Jordan correction.

The final surface tention value is the mean value of two surface tension readings, which are 52.0 mN/m and 54.5 mN/m.

Conclusions:
The surface tension is 52.8 mN/m at 20°C and at a concentration of 1 g/L.

Description of key information

The surface tension of the test substance was determined to be 52.8 mN/m at 20°C and at a concentration of 1 g/L, following EU test method A.5 using the ring method (Baker, 2010).

Key value for chemical safety assessment

Surface tension:
52.8
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The test substance shows some surface activity.