Registration Dossier
Registration Dossier
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EC number: 446-810-1 | CAS number: 136239-66-2 1-BUTOXY-2,3-DIFLUORBENZOL; BUPHOL
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:
- 20 OKT 2005 - 06 MAR 2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- Directive 67/548/EEC Annex V
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Surface tension:
- 68.9 mN/m
- Temp.:
- 20 °C
- Conc.:
- 2.5 mg/L
- Conclusions:
- The surface tension of the aqueous solution at 20 °C is 68.9 mN/m.
- Executive summary:
The surface tension of the sample was tested according to EU Method A.5 and OECD Guideline 115 in a GLP study with the ring method.
The surface tension of the aqueous solution at 20 °C is 68.9 mN/m.
Due to the fact that the surface tension is higher than 60 mN/m, the test item is not to be considered as surface-active.
Reference
An aqueous solution of the test item in de-ionized water with a concentration of 2.5 mg/L (90 % of the water solubility: 2.8 mg/L, determination of the water solubility of project 20011518.02) was prepared. The solution was treated for 1 hour in an ultrasonic bath (20 - 30 °C) and stirred for 17 hours at 25 °C ± 5 °C. After tempering for 2 hours at 20 ± 0.5 °C, the measurement of the surface tension with the test item was carried out at 20 ± 0.5 °C. Six measurements every 5 minutes were performed.
| Measurement | 1 | 2 | 3 | 4 | 5 | 6 |
Time / min |
0 | 5 | 10 | 15 | 20 | 25 |
| σ/ mN/m | 68.9 | 69.0 | 69.1 | 69.0 | 69.0 | 69.1 |
Mean value: σ = 69.017 mN/m
The mean value, multiplied by the calibration factor (F=1.0013) yields to:
σF = σ x F = 69.109 mN/m
After correction with respect to the table given in the consolidated version of Council Directive 67/548/EEC Annex V method A.5. (Harkins-Jordan correction), the final value for the surface tension at 20 °C is:
σ = 68.9 mN/m
Due to the fact that the surface tension is higher than 60 mN/m, the test item is not to be considered as surface-active.
Description of key information
The surface tension of the sample was tested according to EU Method A.5 and OECD Guideline 115 in a GLP study with the ring method.
The surface tension of the aqueous solution at 20 °C is 68.9 mN/m.
Due to the fact that the surface tension is higher than 60 mN/m, the test item is not to be considered as surface-active.
Key value for chemical safety assessment
- Surface tension:
- 68.9
- in mN/m at 20°C and concentration in mg/L:
- 2.5
Additional information
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