Registration Dossier
Registration Dossier
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EC number: 237-016-4 | CAS number: 13586-84-0
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:
- 2009-12-09 to 2009-12-09
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- ring method
- Surface tension:
- 57.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 0.072 g/L
- Remarks on result:
- other: Due to the fact that the surface tension is lower than 60 mN/m, the test item has surface-active properties.
- Conclusions:
- The surface tension of the aqueous solution of the test item, stearic acid, cobalt salt, at 20 °C is sigma = 57.3 mN/m. Due to the fact that the surface tension is lower than 60 mN/m, the test item has surface-active properties.
Reference
Description of key information
Surface tension of stearic acid, cobalt salt (guideline study results): 57.3 mN/m at 20 °C.
Key value for chemical safety assessment
- Surface tension:
- 57.3
- in mN/m at 20°C and concentration in mg/L:
- 72
Additional information
The surface tension of stearic acid, cobalt salt was determined according to OECD guideline 115, ring method. Six measurements at a temperature of 20 +/- 0.5 °C were performed every minute with the test item. Under the described conditions the aqueous solution of the test item, stearic acid, cobalt salt, is sigma = 57.3 mN/m. In conclusion, the test item has weak surface active properties.
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