Registration Dossier
Registration Dossier
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EC number: 947-359-8 | 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:
- 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- not specified
- Type of method:
- plate method
- Key result
- Surface tension:
- 23.26 mN/m
- Temp.:
- 25 °C
- Conc.:
- 10.47 mg/L
- Remarks on result:
- other: 90% saturation solution
- Conclusions:
- Under the study conditions, surface tension of the test substance determined to be 23.26 mN/m at the concentration of 10.47 mg/L solution (which is assumed to be 90% saturated solution).
- Executive summary:
A study was conducted to determine the surface tension of the test substance, using the tensiometer kruss standard plate method similar to the OECD Guideline 115. The critical micelle concentration (CMC) of the substance is 10.468 mg/L. According to guideline, the preparation and handling of the sample should be a solution of the substance in distilled water in a concentration of 90% of the saturation solubility 90% of the CMC (10.469 mg/L) is 10.47 mg/L (which is assumed to be 90% saturated solution). The surface tension of a concentration of 10.47 mg/L (90% of CMC) is determined to be 23.26 mN/m. Under the study conditions, surface tension of the test substance determined to be 23.26 mN/m at the concentration of 10.47 mg/L at 25ºC ( which is assumed to be 90% saturated solution). Therefore, the test substance was considered to be surface-active (Dobbelstein, 2017).
Reference
Description of key information
The surface tension of the test substance was determined using the tensiometer kruss standard plate method similar to OECD Guideline 115 (Dobbelstein, 2017).
Key value for chemical safety assessment
- Surface tension:
- 23.26
- in mN/m at 20°C and concentration in mg/L:
- 10.47
Additional information
Surface tension of the test susbtnace is determined to be 23.26 mN/m at 25ºC and concentration 10.47 mg/L (Surface active).
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