Registration Dossier
Registration Dossier
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EC number: 214-302-7 | CAS number: 1120-24-7
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:
- 25/3/2010-27/4/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- According to OECD Guideline 115 and EU method A.5
- 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:
- yes (incl. QA statement)
- Type of method:
- OECD harmonised ring method
- Surface tension:
- 69.6 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Test solution at 90% of the test substance saturation solubility in water
- Conclusions:
- The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20ºC was 69.6mN/m. According to this, the test substance is considered not be surface active.
- Executive summary:
The OCED harmonized ring method was used in a guideline study for the determination of the surface tension of the substance. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20ºC was 69.6 mN/m. According to this, the test substance is considered not be surface active.
Reference
| Surface tension | Surface | tension (mN/m) | ||
| Measurement | Time passed (minutes) | Individual | mean | mean multiplied by calibration factor and Harkins-Jordan corrected value |
| 1 | 16 | 68.2 | 69.0 (1) | 69.6 |
| 2 | 17 | 69.0 | ||
| 3 | 18 | 68.8 | ||
| 4 | 19 | 68.8 | ||
| 5 | 20 | 69.2 | ||
| 6 | 21 | 69.0 |
(1) Mean calculated from measurements 2 to 6, after equilibrium was reached.
Description of key information
Not surface-active
Key value for chemical safety assessment
- Surface tension:
- 69.6
Additional information
The surface tension of a non-neutralized solution (90% saturation; pH not determined) of C10-DMA was tested according to the OECD harmonized ring method (OECD 115; EU method A.5): from a 1 g/L mixture with water the undissolved C10-DMA layer was removed and water added to obtain a 90% saturation level (actual concentration unknown) of the test substance saturation solubility in water. At 20 °C the surface tension was determined to 69.6 mN/m. According to this, the test substance is considered not be surface-active.
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