Registration Dossier
Registration Dossier
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EC number: 418-480-9 | CAS number: 138526-69-9 1-BROM-3,4,5-TRIFLUORBENZOL; 1-BROMO-3,4,5-TRIFLUOROBENZENE
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:
- 29.09.2000
- 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 92/69/EEC (Method A.5.)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 70.4 mN/m
- Temp.:
- 23 °C
- Conc.:
- 0.117 g/L
- Conclusions:
- The absolute surface tension of the test item was determined to be 70.4 mN/m.
- Executive summary:
A study was conducted according to Directive 92/69/EEC Method A.5 to determine the surface tension of an aqueous solution of the test item using the ring method. Therefore, a saturated solution at 90 % of the test substance in ultrapure water was prepared. Surface tension was determined at 23 °C. The surface tension of an aqueous solution the test item at 90 % saturation concentration (117 mg/L) was found to be 70.4 mN/m. As this value is higher than 60 mN/m, the test item is not classified as surface active substance.
Reference
Result of the determination of the density of the solution:
Concentration of the test solution: 90 % of the saturation concentration
Density of the solution: 0.99726 g/mL
Result of the determination of the surface tension:
Adjustment of equilibrium: from 30 min
Measuring time |
Measured value [mN/m] |
9:40 |
75.0 |
9:55 |
74.7 |
10:10 equilibrium |
74.6 |
10:35 |
74.6 |
11:05 |
74.5 |
11:20 |
74.4 |
11:30 |
74.5 |
11:45 |
74.4 |
Mean value at equilibrium: |
74.5 |
Corrected surface tension: |
70.4 |
Description of key information
The surface tension of the test item was determined to be 70.4 mN/m (reference 4.10-1).
Key value for chemical safety assessment
- Surface tension:
- 70.4
- in mN/m at 20°C and concentration in mg/L:
- 117
Additional information
A study was conducted according to Directive 92/69/EEC Method A.5 to determine the surface tension of an aqueous solution of the test item using the ring method. Therefore, a saturated solution at 90 % of the test substance in ultrapure water was prepared. Surface tension was determined at 23 °C. The surface tension of an aqueous solution the test item at 90 % saturation concentration (117 mg/L) was found to be 70.4 mN/m. As this value is higher than 60 mN/m, the test item is not classified as surface active substance.
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