Registration Dossier
Registration Dossier
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EC number: 857-673-6 | CAS number: 1879067-61-4
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)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 67.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The mean surface tension of a 1.0 g/L solution of the test substance at 20 °C was determined to be 67.3 mN/m.
- Executive summary:
The surface tension of duplicate 90% saturated solution of the test substance in high purity water was determined under GLP to OECD TG 115, using the ring method. A proper aliquot of test substance was diluted in high purity water (with a specification of resistance >15 MΩ and TOC ca. 20 ppb). Duplicate sample solutions were prepared for two independent determinations by diluting an aliquot of about 0.2 g of test substance in 200 mL high purity water. This solution was then shaken at 30 °C for about 42 hours. The solution was then equilibrated at 20 °C for about 23 hours. The isolated, saturated filtrate was then diluted to 90% of its former concentration with high purity water. An aliquot of each sample solution was then transferred to the measuring vessel. The measurements were done with a torsion balance for surface and interfacial tension determinations. The measured surface tension values of the clear, colourless solutions at a nominal concentration of 1.0 g/L were 67.3 mN/m and 67.3 mN/m, resulting in a mean surface tension of 67.3 mN/m at 20.0 ± 0.5 °C. The pH value of the two solutions was 6.7 to 6.8.
Reference
Description of key information
Surface tension of 1.0 g/L solution = 67.3 mN/m at 20 °C (GLP, OECD TG 115)
Key value for chemical safety assessment
- Surface tension:
- 67.3
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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