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EC number: 915-384-3 | CAS number: -
- Life Cycle description
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- Endpoint summary
- Appearance / physical state / colour
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- Density
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- Endpoint summary
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- Ecotoxicological Summary
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- Additional toxicological data

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:
- From June 20, 2017 to June 22, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- equivalent or similar 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:
- not specified
- Type of method:
- ring method
- Key result
- Surface tension:
- 29 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- Under the study conditions, the surface tension of the test substance was established at 29.0 mN/m.
- Executive summary:
A study was conducted to determine the surface tension of the test substance using ring method according to EU Method A.5 similar to OECD Guideline 115. The two samples were prepared by dissolving the test substance into water at 1 g/L. The test solutions were conditioned for 0.5 h in an ultrasonic bath and tempered at 20°C. The solutions were light cloudy. Then the automatic measurement was initiated. The average of 6 single measurements was determined per solution. In this case the total measuring time was more than 3000 s per solution. Arithmetic mean was corrected by calibration factor determined via water calibration. Under the study conditions, the surface tension of the test substance was established at 29.0 mN/m (Kintrup, 2017).
Reference
Water calibration: Temp. = 21°C, p = 0.998 g/cm3
Result of calibration: Arithmetic mean 71.5 mN/m, standard deviation 0.1 mN/m from 6 measurements (theoretical value: 72.4 mN/m -> correction factor 1.0126)
First test solution: c = 984.9 mg/I, Temp. = 22°C, p = 0.998 g/cm3, age of the solution: 240 min
Result 1: Arithmetic mean 27.3 mN/m, standard deviation 0.1 mN/m from 6 measurements
Second test solution: c = 1082 mg/1, Temp. = 21°C, p= 0.998 g/cm3, age of the solution: 298 min
Result 2: Arithmetic mean 29.9 mN/m, standard deviation 0.0 mN/m from 6 measurements
Arithmetic mean of two test solutions: 28.6 mN/m (± 1.8 mN/m)
Arithmetic mean corrected by calibration factor determined via water calibration: 29.0 mN/m
Description of key information
The surface tension was determined according to EU Method A.5 and similar to OECD Guideline 115 (Kintrup, 2017).
Key value for chemical safety assessment
- Surface tension:
- 29
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