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EC number: 285-480-1 | CAS number: 85099-25-8
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
- 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
- Key result
- Surface tension:
- 72 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The test substance is not considered to be surface active (surface tension >60 mN/m).
Reference
Time |
Surface tension (mN/m) |
||
(minutes) |
(calibration corrected) |
|
|
|
A |
B |
|
|
|
|
|
0 |
72.0 |
72.5 |
|
5 |
72.5 |
72.5 |
|
10 |
72.5 |
72.5 |
|
15 |
72.5 |
73.0 |
|
20 |
72.5 |
72.5 |
|
25 |
72.5 |
73.0 |
|
30 |
72.5 |
73.0 |
|
|
|
|
|
Overall mean calibration corrected surface tension = 72.5 mN/m
Harkins-Jordan* corrected value = 72.0 mN/m
*: HARKINS, W.D. and JORDAN, H.F., J. Amer.Chem. Soc.52, 1751 (1930).
Description of key information
72 mN/m (1 g/L aqueous solution at 20°C) (OECD 115, EC A.5)
Key value for chemical safety assessment
- Surface tension:
- 72
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The test substance is not considered to be surface active (surface tension >60 mN/m).
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