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EC number: 226-122-6 | CAS number: 5285-60-9
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:
- from 10 April 2018 to 20 June 2018
- 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:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- OECD harmonised ring method
- Specific details on test material used for the study:
- All solutions containing the test item were protected from light.
- Key result
- Surface tension:
- 63.4 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Conc.= 90% of test item saturation solubility
- Conclusions:
- The surface tension of an aqueous substance solution at 90% of its saturation solubility was determined to be 63.4 mN/m (at 20°C).
- Executive summary:
The OECD harmonized ring method was used in a GLP study based on EC A.5 and OECD 115. The surface tension of an aqueous substance solution at 90% of its saturation solubility was determined to be 63.4 mN/m (at 20°C). According to EC A.5 the substance is not surface active. Taken the water solubility into account, the concentration tested is at approximate 1 mg/L.
Reference
Table: Surface tension measurements
Measurement |
Time passed after transfer test solution to test vessel |
Surface tension |
||
individual |
mean |
mean (1) |
||
1 |
15 |
65.6 |
65.4 |
63.4 |
2 |
16 |
65.4 |
|
|
3 |
17 |
65.4 |
|
|
4 |
18 |
65.5 |
|
|
5 |
19 |
65.2 |
|
|
(1) Mean multiplied by the calibration factor and Harkins-Jordan corrected.
Description of key information
Surface tension at 20°C for aqueous solution: 63.4 mN/m (EC A.5, OECD 115: OECD harmonised ring method)
Key value for chemical safety assessment
- Surface tension:
- 63.4
- in mN/m at 20°C and concentration in mg/L:
- 1
Additional information
Concentration tested: 90% of substance's saturation solubility in water (i.e. at approximate 1 mg/L)
According to the EC A.5 guideline the substance is not surface active.
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