Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October 1996 and 9 January 1997
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted according to method A5 as described in the EEC Methods for the determination of physicochemical properties, Directive 92/69/EEC and in accordance with cGLP .

Data source

Reference Type:
study report
Report date:

Materials and methods

Test guideline
according to guideline
EU Method A.5 (Surface Tension)
Principles of method if other than guideline:
The test vessel was half-filled with liquid, put on the tensiometer test platform, and raised so that the ring was 2 - 3 mm below the liquid surface. The platform was lowered to draw a lamella from the liquid surface. The maximum force which arose just before the lamella was torn off is the surface tension and was recorded by the chart recorder. Measurements were made at 2 minute intervals until a constant value (to within 0.1 mN/m) were recorded. The room temperature was monitored throughout the test.
The following order of tests were performed using the above method: distilled water, test solution 1, test solution 2 and distilled water.
GLP compliance:
Type of method:
OECD harmonised ring method

Test material

Constituent 1
Test material form:
solid: crystalline
Details on test material:
Date recieved: 2 October 1996
intended use: Pharma intermediate

Results and discussion

Surface tension
Surface tension:
71.8 mN/m
16.5 °C
1 g/L

Applicant's summary and conclusion

The surface tension of a lg/I aqueous solution ofUK-143,108 is 71.8 mN/m at 16.5°C.

Under the terms of the EEC Directive UK-143, 108 is not considered to be a surface active material at 16.5°C because the surface tension is greater than 60 mN/m.