Registration Dossier
Registration Dossier
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EC number: 245-740-7 | CAS number: 23564-05-8
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:
- 2001
- 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:
- other: surface tension meter
- Key result
- Surface tension:
- 72.2 mN/m
- Temp.:
- 20 °C
- Conc.:
- 16 mg/L
- Conclusions:
- The surface tension of the test item was determined to be 72.2 mN/m at 20 °C.
- Executive summary:
A study was conducted according to OECD TG 115 and Regulation (EC) No 440/2005 Method A.5 to determine the surface tension of an aqueous solution of the test item using surface tension meter. Therefore, a saturated solution of the test substance in ultrapure water was prepared in by adding ca. 16 mg of the test substance to 1000 mL of distilled water and thoroughly mixed. The test solutions (in triplicate) were kept at a constant temperature (20 °C). Surface tension was determined at 20.0 ± 1 °C. The surface tension of the test item aqueous solution was found to be 72.2 mN/m. As this value is higher than 60 mN/m, the test item is not classified as surface active.
Reference
The surface tension of the test item was determined to be 72.2 mN/m at 20 °C.
| Sample No. | Sampling weight (mg) | Concentration of test solution (mg/L) | Progress tima * (sec, (min)) | Surface tension (mN/m) | Average (mN/m) |
| 1 | 16.2 | 16.2 | 115 (2) | 72.6 | |
| 2 | 16.2 | 16.2 | 115 (2) | 72.3 | 72.2 |
| 3 | 15.7 | 15.7 | 115 (2) | 71.8 |
Description of key information
The surface tension of the test item was determined to be 72.2 mN/m at 20 °C.
Key value for chemical safety assessment
- Surface tension:
- 72.2
- in mN/m at 20°C and concentration in mg/L:
- 16
Additional information
A study was conducted according to OECD TG 115 and Regulation (EC) No 440/2005 Method A.5 to determine the surface tension of an aqueous solution of the test item using surface tension meter. Therefore, a saturated solution of the test substance in ultrapure water was prepared in by adding ca. 16 mg of the test substance to 1000 mL of distilled water and thoroughly mixed. The test solutions (in triplicate) were kept at a constant temperature (20 °C). Surface tension was determined at 20.0 ± 1 °C. The surface tension of the test item aqueous solution was found to be 72.2 mN/m. As this value is higher than 60 mN/m, the test item is not classified as surface active.
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