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EC number: 931-558-1 | CAS number: 90583-11-2
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:
- 2010-05-18
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- GLP compliance:
- no
- Surface tension:
- 23.3 mN/m
- Temp.:
- 23 °C
- Conc.:
- 1 g/L
Reference
Water calibration:
Temp. = 24 °C, σ = 0.997 g/cm³.
Surface tension of purified water was determined by the arithmetic mean of six measurements, which is 71.4 mN/m (theoretical value is 72.0 mN/m, therefore correction factor is 1.0084).
Two solutions were tested six times:
First solution: c = 1.001 g/L, temp. = 23 °C, σ = 0.997 g/cm³, age of solution = 143 min.
Arithmetic mean of six measurements is 23.3 mN/m, standard deviation is 0.5 mN/m.
Second solution: c = 1.004 g/L, temp. = 23 °C, σ = 0.997 g/cm³, age of solution = 151 min.
Arithmetic mean of six measurements is 22.9 mN/m, standard deviation is 1.1 mN/m.
Arithmetic mean of two test solution is 23.1 mN/m (± 0.28 mN/m)
Arithmetic mean corrected by calibration factor determined via water calibration is 23.3 mN/m.
Description of key information
The surface tension is 23.3 mN/m (c = 1 g/l) at 23 °C (EU A.5., similar to OECD 115).
Key value for chemical safety assessment
- Surface tension:
- 23.3
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The value for surface tension is taken from study report.
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