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EC number: 948-069-4 | CAS number: -
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 2012-11-23 to 2012-11-27
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- The study was conducted according to a method recommended in international standards. No deviation was reported. The substance is considered to be adequately characterised with its purity. Therefore full validation applies.
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 304
- Version / remarks:
- 1985
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Inspected on 10 July 2012 / Signed on 30 November 2012
- Type of method:
- ring method
- Specific details on test material used for the study:
- Storage conditions: room temperature in the dark
- Key result
- Surface tension:
- 64.7 mN/m
- Temp.:
- 21 °C
- Remarks on result:
- other: expected 90% saturated solution
- Conclusions:
- According to EU A5 criteria, as the result is above the threshold value of 60 mN/m, the substance is NOT considered to have surface-active potential under the experimental conditions.
- Executive summary:
The surface tension of the test substance was measured under GLP according to OECD 115/EU A5 guidelines, ring method, at expected 90% of the saturation solubility.
Two replicates were performed, and the mean value was corrected with calibration factor from water.
The surface tension of the test substance is 64.7 mN/m, at ca 9.2 mg/L and 21°C.
Reference
Water (calibration)
Temperature = 21.0-21.2°C
Sample 1: calibration factor = 1.001 (mean of 6 measurements)
Sample 2: calibration factor = 1.001 (mean of 8 measurements)
Test item
Temperature = 21.0 ± 0.5 ºC
Sample 1: 63.3 mN/m (mean of 5 measurements) = 63.4 mN/m corrected; pH = 4.7
Sample 2: 65.8 mN/m (mean of 6 measurements) = 65.9 mN/m corrected; pH = 5.3
Mean sample result = 64.7 ± 2.0 mN/m
Description of key information
Surface tension = 64.7 mN/m, at 90% saturation expected (i.e. ca 9.2 mg/L), and 21°C.
According to EU A5 criteria, as the result is above the threshold value of 60 mN/m, the substance is NOT considered to have surface-active potential under the experimental conditions.
Key value for chemical safety assessment
- Surface tension:
- 64.7
Additional information
A fully reliable experimental study, conducted according to a recognized OECD/EU/ISO method and under GLP, is available. It is considered as a key study, and the result is retained as key value.
Concentration is not specified as actual concentration was not measured.
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