Registration Dossier
Registration Dossier
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EC number: 947-942-7 | 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- plate method
- Surface tension:
- 64.8 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension is 64.8 mN/m (diluted to 1 g/L in water at 20 °C).
- Executive summary:
According to EU Method A.5 the surface tension is 64.8 mN/m. A commercially available tensiometer based on the plate method has been used to measure the force which is required to withdraw a horizontally suspended plate from the surface of the test item. The surface tension was determined in a solution of 1.0002 g test item in 1 L demineralized water (approx. 1 g/L) at 20 °C. After 24 h stirring a clear measuring solution was obtained and no particles were visible. For verification of the measured values the surface tension of demineralized water was also measured. With a correspondence of the measured value σ (20 °C) = 72.5 mN/m, to the theoretical value σ (20 °C) = 72.75 mN/m, cited in literature, the determination of the surface tension of the test item is considered as valid.
Reference
Description of key information
Surface tension at 20 °C: 64.8 mN/m (diluted to 1 g/L in water)
Key value for chemical safety assessment
- Surface tension:
- 64.8
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
For verification of the measured values the surface tension of demineralized water was also measured. With a correspondence of the measured value σ (20 °C) of 72.5 mN/m, to the theoretical value σ (20 °C) = 72.75 mN/m, cited in literature, the determination of the surface tension of the substance is considered as valid.
Reference:
Neuland, 2015
Guideline:
EU Method A.5
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