Registration Dossier
Registration Dossier
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EC number: 224-632-3 | CAS number: 4432-31-9
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
- Type of method:
- OECD harmonised ring method
- Key result
- Surface tension:
- 70.9 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1.01 g/L
- Conclusions:
- The surface tension of the test item was determined to be 70.9 mN/m at 20 °C.
- Executive summary:
A study was conducted according to EU-Method A.5 and OECD Guideline 115 to determine the surface tension of an aqueous solution of the test item using the ring method. The concentration of the test solution was 1.01 g/L. The mean surface tension was determined to be 70.9 mN/m (standard deviation 0.06). Therefore, the test substance is considered as not surface active, as its surface tension is > 60 mN/m.
Reference
The surface tension of the substance was determined in an experimental study under GLP conditions according to OECD Test Guideline 115 using the harmonised OECD ring method.
The mean surface tension (n=5) was 70.9 mN/m.
The test substance is considered as not surface active, as its surface tension is > 60 mN/m.
Φ was calculated as 1.036 (from the four water tensiometer readings (mN/m): 70.2, 70.4, 70.2, 70.2).
Surface tension at the five time points, with a mean of 70.9 mN/m and a standard deviation of 0.06.
| Time point | Tensiometer reading (mN/m) | Experimental value EV (mN/m) | Surface tension (mN/m) |
| 4:00 | 68.5 | 70.9 | 70.9 |
| 4:20 | 68.6 | 71.0 | 71.0 |
| 4:40 | 68.6 | 71.0 | 71.0 |
| 5:00 | 68.5 | 70.9 | 70.9 |
| 5:20 | 68.5 | 70.9 | 70.9 |
Description of key information
The surface tension of the test item was determined to be 70.9 mN/m at 20 °C.
Key value for chemical safety assessment
- Surface tension:
- 70.9
- in mN/m at 20°C and concentration in mg/L:
- 1 010
Additional information
A study was conducted according to EU-Method A.5 and OECD Guideline 115 to determine the surface tension of an aqueous solution of the test item using the ring method. The concentration of the test solution was 1.01 g/L. The mean surface tension was determined to be 70.9 mN/m (standard deviation 0.06). Therefore, the test substance is considered as not surface active, as its surface tension is > 60 mN/m.
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Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
