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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Surface tension

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surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
EU Method A.5 (Surface Tension)
GLP compliance:
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
20 °C
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.

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

Additional information

The test substance shows some surface activity.