Registration Dossier
Registration Dossier
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EC number: 253-981-4 | CAS number: 38517-37-2
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:
- From May 05, 2016 to July 04, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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:
- not specified
- Type of method:
- ring method
- Specific details on test material used for the study:
- Batch no.: 3837
Appearance: white powder - Key result
- Surface tension:
- 23.5 mN/m
- Temp.:
- 21 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: arithmetic mean corrected by calibration factor determined via water calibration
- Conclusions:
- Under the study conditions, the surface tension of the substance was determined to be 23.5 mN/m at 21°C and for a concentration of 1 g/L.
- Executive summary:
A study was conducted to determine the surface tension of the substance according to EU Method A.5. The test substance was dissolved in water (1 g/L), conditioned for 10 min in an ultrasonic bath and tempered at 20°C. The automatic measurement was then initiated. The practical test performance was based on the in-house test procedure 34N10001.01: "Determination of Surface Tension of aqueous solutions". Two different solutions with a concentration of 1 g/L were prepared. The surface tension should be measured, if the solution is in equilibrium state. An average of 6 single measurements was determined per solution. In this case, the total measuring time was more than 1200 sec per solution. Under the study conditions, the surface tension of the substance was determined to be 23.5 mN/m at 21°C and for a concentration of 1 g/L (Kintrup, 2016).
Reference
Results (from 6 measurements):
- Water calibration (at 20°C with a density of 0.998 g/cm3): 71.7 mN/m.
- First test solution (at 21°C with a density of 0.998 g/cm3, concentration = 1.009 g/L, and age of the solution = 1053 min): 23.1 +/- 0.3 mN/m.
- Second test solution (at 21°C with a density of 0.998 g/cm3, concentration = 1.01 g/L, and age of the solution = 1547 min): 23.5 +/- 0.4 mN/m.
Description of key information
The surface tension was determined according to EU Method A.5 (Kintrup, 2016).
Key value for chemical safety assessment
- Surface tension:
- 23.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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