Registration Dossier
Registration Dossier
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EC number: 242-768-1 | CAS number: 19035-79-1
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:
- 2013-01-17
- 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:
- dated 31 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: DIN EN 14370 dated November 2004
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 64.1 mN/m
- Temp.:
- 20 °C
- Conc.:
- 178 g/L
- Conclusions:
- The surface tension of the test item was determined using a tensiometer. The calibration factor of the tensiometer was calculated to be 1.004 (72.8 mN/m/ 72.5 mN/m).The surface tension of the test item in water (215 mg/L) was determined to be 61.8 mN/m at 20 °C.
- Executive summary:
A study was conducted according to Regulation (EC) No 440/2008 method A.5, OECD TG 115 and DIN EN 14370. The ring method was conducted. The specific calibration factor of the tensiometer was determined using water at 20 degree C to be 1.004. Six replicate measures with an equilibration time of 15 min were conducted to assure there is no time dependency of the measurement. The surface tension of potassium hexadecyl hydrogen phosphate was determined of an aqueous solution of the test item at 90 % of the saturation concentration at 215 mg/L. The surface tension the test item in water (215 mg/L) was determined to be 61.8 mN/m at 20 °C.
Reference
Description of key information
The surface tension of potassium hexadecyl hydrogen phosphate in water (178 mg/L) was determined to be 64.1 mN/m at 20 °C.
Key value for chemical safety assessment
- Surface tension:
- 64.1
- in mN/m at 20°C and concentration in mg/L:
- 178
Additional information
A study was conducted according to Regulation (EC) No 440/2008 method A.5, OECD TG 115 and DIN EN 14370. The ring method was conducted. The specific calibration factor of the tensiometer was determined using water at 20 degree C to be 1.004. Six replicate measures with an equilibration time of 15 min were conducted to assure there is no time dependency of the measurement. The surface tension of potassium hexadecyl hydrogen phosphate was determined of an aqueous solution of the test item at 90 % of the saturation concentration at 178 mg/L. The surface tension of the test item in water (178 mg/L) was determined to be 64.1 mN/m at 20 °C.
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