Registration Dossier
Registration Dossier
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EC number: 946-091-9 | CAS number: -
Surface tension
Administrative data
- 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
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- 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
Test material
- Reference substance name:
- Sulfuric acid, mono-C12-14-alkyl esters, ammonium salts
- EC Number:
- 292-209-0
- EC Name:
- Sulfuric acid, mono-C12-14-alkyl esters, ammonium salts
- Cas Number:
- 90583-11-2
- Molecular formula:
- n.a. (UVCB)
- IUPAC Name:
- Sulfuric acid, mono-C12-14-alkyl esters, ammonium salts
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 23.3 mN/m
- Temp.:
- 23 °C
- Conc.:
- 1 g/L
Any other information on results incl. tables
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.
Applicant's summary and conclusion
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