Registration Dossier
Registration Dossier
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EC number: 485-320-2 | CAS number: 221667-31-8
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- HESSISCHES MINISTERIUM FÜR UMWELT, LANDWIRTSCHAFT UND FORSTEN, Wiesbaden, Germany
- Type of method:
- OECD harmonised ring method
- Surface tension:
- 71.8 mN/m
- Temp.:
- 20 °C
- Conc.:
- 90 other: % of saturated solution
Reference
| Experiment 1 | Experiment 2 | ||
| Time / seconds | mN/m | Time / seconds | mN/m |
1. measurement | 72.8 | 70.77 | 72.9 | 70.87 |
2. measurement | 118.7 | 70.60 | 118.1 | 70.70 |
3. measurement | 162.40 | 70.51 | 162.4 | 70.60 |
4. measurement | 206.7 | 70.44 | 206.7 | 70.54 |
5. measurement | 251.1 | 70.39 | 251.0 | 70.50 |
6. measurement | 295.1 | 70.34 | 294.9 | 70.45 |
7. measurement | 339.5 | 70.30 | 342.0 | 70.42 |
8. measurement | 383.8 | 70.28 | 385.2 | 70.38 |
9. measurement | 431.7 | 70.26 | 433.0 | 70.37 |
10. measurement | 476.1 | 70.24 | 479.7 | 70.34 |
Mean Surface Tension mN/m | 70.41 |
| 70.52 | |
Mean (experiments 1 to 2): σmean = 70.47 mN/m
Standard deviation: 0.08 mN/m
Relative standard deviation: 0.11%
The mean value, multiplied by the calibration factor (F=1.0188) yields to:
σ = σmean *F = 71.79 mN/m
According to the EEC guideline a saturated solution has been prepared and then diluted to 90 % of the saturation concentration.
The surface tension of the test item at 20 °C was: σ = 71.8 mN/m
Description of key information
71.8 mN/m at 20 °C (conc.: 90 % saturation)
(OECD 115, harmonized ring method)
Key value for chemical safety assessment
- Surface tension:
- 71.8
Additional information
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