Registration Dossier
Registration Dossier
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EC number: 263-167-0 | CAS number: 61791-34-2
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 Jun to 23 Jun 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- GLP compliance:
- not specified
- Type of method:
- ring method
- Surface tension:
- 31.7 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Reference
Results
First test solution:
Concentration = 939.0 mg/L
Temp. = 21 °C, p = 0.998 g/cm3,
Age of the solution: 240 min
Surface tension of the solution |
|
Value 1 |
30.9 mN/m |
Value 2 |
30.9 mN/m |
Value 3 |
30.9 mN/m |
Value 4 |
31.0 mN/m |
Value 5 |
31.0 mN/m |
Value 6 |
31.0 mN/m |
Arithmetic mean |
30.9 mN/m |
Standard deviation |
0.1 mN/m |
From 6 measurements, arithmetic mean 30.9 mN/m, standard deviation 0.1 mN/m
Second test solution:
Concentration = 983 mg/L
Temp. = 21 °C, p = 0.998 g/cm3,
Age of the solution: 330 min
Surface tension of the solution |
|
Value 1 |
31.8 mN/m |
Value 2 |
31.8 mN/m |
Value 3 |
31.7 mN/m |
Value 4 |
31.7 mN/m |
Value 5 |
31.7 mN/m |
Value 6 |
31.7 mN/m |
Arithmetic mean |
31.7 mN/m |
Standard deviation |
0.0 mN/m |
From 6 measurements, arithmetic mean = 31.7 mN/m, standard deviation 0.0 mN/m
Temperature differences were considered by entry of the density.
Calculation
Arithmetic mean of two test solutions = 31.3 mN/m (0.6 mN/m)
The arithmetic mean was corrected by calibration
Factor determined via water calibration = 31.7 mN/m
Conclusion
The test item has surface tension of 31.7 mN/m
Description of key information
Surface tension = 31.7 mN/m 20° and approx. 1 g/L (EU A.5, ring method)
Key value for chemical safety assessment
- Surface tension:
- 31.7
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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