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Diss Factsheets

Physical & Chemical properties

Surface tension

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline available
Principles of method if other than guideline:
Measurement of surface tension with NIMA Tensiometer
GLP compliance:
no
Type of method:
other: not specified
Surface tension:
71.6 mN/m
Temp.:
20 °C
Conc.:
0.01 other: %
Remarks on result:
other: mean value
Key result
Surface tension:
70.3 mN/m
Temp.:
20 °C
Conc.:
0.1 other: %
Remarks on result:
other: mean value
Surface tension:
69.6 mN/m
Temp.:
20 °C
Conc.:
1 other: %
Remarks on result:
other: mean value
Surface tension:
55.5 mN/m
Temp.:
20 °C
Conc.:
10 other: %
Remarks on result:
other: mean value
Surface tension:
48.6 mN/m
Temp.:
20 °C
Conc.:
30 other: %
Remarks on result:
other: mean value
Surface tension:
45.9 mN/m
Temp.:
20 °C
Conc.:
50 other: %
Remarks on result:
other: mean value
Conclusions:
Surface tension at 20°C:
71.6 mN/m (0.01% SPM)
70.3 mN/m (0.1% SPM)
69.6 mN/m (1% SPM)
55.5 mN/m (10% SPM)
48.6 mN/m (30% SPM)
45.9 mN/m (50% SPM)
The study was performed in accordance with generally accepted scientific standards and described in sufficient detail and therefore reliability of Klimisch 2 has been assigned.
Executive summary:

The determination of the surface tension of the test item has been measured with a NIMA tensiometer (no GLP). Several solutions of the test item in HPLC water were prepared, the following concentrations have been tested (each five times): 0.01, 0.1, 1, 10, 30 and 50%. For the 3 lower concentrations, the surface tensions is well above 60 mN/m, ≥ 10% the surface tension is below 60 mN/m (45.9 mN/m for 50%). Concluding, the substance lowered the surface tension, but significant changes were only observed for higher concentrations; no micelles were formed. Hence, surface activity has to be regarded, but the test substance cannot be regarded as tenside in the narrow sense.

Description of key information

Surface tension at 20°C (NIMA Tensiometer): 71.6 mN/m (0.01% SPM), 70.3 mN/m (0.1% SPM), 69.6 mN/m (1% SPM), 55.5 mN/m (10% SPM), 48.6 mN/m (30% SPM), 45.9 mN/m (50% SPM)

Key value for chemical safety assessment

Surface tension:
70.3
in mN/m at 20°C and concentration in mg/L:
10

Additional information