Registration Dossier
Registration Dossier
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EC number: 287-090-7 | CAS number: 85409-23-0
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:
- January 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 4311 (1979)
- Version / remarks:
- Anionic and non-ionic surface active agents – Determination of the critical micellization concentration – Method by measuring surface tension with a plate, stirrup or ring
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- ca. 30.1 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- Under the study conditions, the surface tension measurement for a 1 g/L nominal test concentration in water was determined to be 30.1 ± 0.5 mN/m at 20 ± 0.5ºC; therefore, the test substance was considered to be surface-active.
- Executive summary:
A study was conducted to determine the surface tension of the test substance, C12-14 ADEBAC (active: 51.13%) using the ring method, according to ISO 4311 (1979), in compliance with GLP. Under the study conditions, the surface tension measurement for a 1 g/L nominal test concentration in water was determined to be 30.1 ± 0.5 mN/m at 20 ± 0.5ºC. Therefore, the test substance was considered to be surface-active (Moller, 2018).
Reference
In the first (not reported) preliminary test, a surface tension of 30.3 mN/m was measured for a concentration of 1015 mg/L. In the second preliminary study, which was reported, a surface tension of 30.0 mN/m was measured for a concentration of 1110 mg/L and a surface tension of 30.4 mN/m was determined at a concentration of 751 mg/L.
Therefore, based on the measurements of the second preliminary test, the surface tension for a concentration of 1 g/L can be estimated to be 30.1 mN/m.
Description of key information
Surface tension of the test substance was determined using the ring method, according to ISO 4311 (1979) standard (Moller, 2018).
Key value for chemical safety assessment
- Surface tension:
- 30.1
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
(surface active)
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