Registration Dossier
Registration Dossier
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EC number: 247-978-7 | CAS number: 26761-42-2
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 29.07.-03.08.2016
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- not performed according to GLP
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- plate method
- Key result
- Surface tension:
- 43.25 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: Temperature during the test was not reported, however standard temperature (20°C) can be assumed.
- Conclusions:
- Surface tension σ = 43.25 mN/m
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 29.07.-03.08.2016
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- not performed according to GLP
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- plate method
- Key result
- Surface tension:
- 67.9 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: Temperature during the test was not reported, however standard temperature (20°C) can be assumed.
- Conclusions:
- Surface tension σ = 67.90 mN/m
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 29.07.-04.08.2016
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- not performed according to GLP
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- plate method
- Key result
- Surface tension:
- 72.68 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: Temperature during the test was not reported, however standard temperature (20°C) can be assumed.
- Conclusions:
- Surface tension σ = 72.68 mN/m
- Endpoint:
- surface tension
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Referenceopen allclose all
Result: σ1 = 43.08 mN/m, σ2 = 43.03 mN/m, σ3 = 43.63 mN/m (No time dependence observed within 360 s)
σ = 43.25 mN/m
Result: σ1 = 67.74 mN/m, σ2 = 67.94 mN/m, σ3 = 68.02 mN/m (No time dependence observed within 360 s)
σ = 67.90 mN/m
Result: σ1 = 72.62 mN/m, σ2 = 72.72 mN/m, σ3 = 72.71 mN/m (No time dependence observed within 360 s)
σ = 72.68 mN/m
Description of key information
Three tests on the surface tension according to OECD TG 115 were recently conducted for a representative sub-set of MCRC substances, i.e. magnesium neodecanoate (carbon chainlength: 10), zinc toluate (carbon chain length: 3) and calcium benzoate (carbon chain length: 2), yielding a result as surface-active substance for magnesium neodecanoate (43.25 mN/m) and not surface-active substance for zinc toluate (67.90 mN/m) and calcium benzoate (72.68 mN/m). In an aromatic compound the circle is counded as one carbon in the carbon chain length, therefore zinc toluate has a carbon chain length of 3 and calcium benzoate has a carbon chain length of 2. Since potassium neodecanoate represents an inorganic salt containing an anion of an acid with a carbon chain length of 10, it can safely be assumed that this substance is surface active. As stated in the ECHA Guidance on information requirements and chemical safety assessment, Chapter R.7a: Endpoint specific guidance, R.7.1.18.1, May 2008, p.182, 185, a low surface tension (of below 33 mN/m) is one indicator for aspiration hazard. It can safely be assumed that the surface tension effect of potassium neodecanoate is above 33 mN/m, thus further testing is not required (in accordance with Regulation (EC) 1907/2006, Annex VII, section 7.6, Column 2).
Key value for chemical safety assessment
Additional information
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