Registration Dossier
Registration Dossier
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EC number: 470-180-7 | CAS number: 61196-40-5
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:
- 22.07.2004 - 06.10.2004
- 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:
- 92/69/EWG from 29.12.1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- OECD harmonised ring method
- Key result
- Surface tension:
- 65 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of the test item was determined to be 65 mN/m at 20 °C. The test item should not be classified as surface active substance.
- Executive summary:
A study was conducted according to Regulation (EC) 92/69/EWG Method A.5 to determine the surface tension of an aqueous solution of the test item using the ring method. Therefore, a saturated solution of the test substance in ultrapure water was prepared in by adding ca. 200 mg of the test substance to 200 mL of bidest water and thoroughly mixed at a constant temperature (20°C). Surface tension was determined at 20.0±0.5°C. The surface tension of the test item aqueous solution was found to be 65 mN/m. As this value is higher than 60 mN/m, the test item is not classified as surface active.
Reference
The surface tension (mean value from three individual values: 63.53 mN/m, 66.04 mN/m, 65.38 mN/m) was determined to be 65.0 mN/m at 20 °C in a solution with concentration of 1.0 g/L. The test substance shall be classified as not surface active under the conditions of the method.
Description of key information
The surface tension of the test item was determined to be 65 mN/m at 20 °C. The test item should not be classified as surface active substance.
Key value for chemical safety assessment
- Surface tension:
- 65
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
A study was conducted according to Regulation (EC) 92/69/EWG Method A.5 to determine the surface tension of an aqueous solution of the test item using the ring method. Therefore, a saturated solution of the test substance in ultrapure water was prepared in by adding ca. 200 mg of the test substance to 200 mL of bidest water and thoroughly mixed at a constant temperature (20 °C). Surface tension was determined at 20.0 ± 0.5 °C. The surface tension of the test item aqueous solution was found to be 65 mN/m. As this value is higher than 60 mN/m, the test item is not classified as surface active (reference 4.10-1).
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