Registration Dossier
Registration Dossier
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EC number: 224-699-9 | CAS number: 4454-16-4
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study according to international guidelines.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- EU Method A.5 (Surface Tension)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Surface tension:
- >= 68 - <= 68.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 304.56 mg/L
- Conclusions:
- The mean surface tension of the test item at approximately its hydrosolubility in demineralized water was 68.0.2 ± 0.2 mN/m (corrected value).
The test item was not considered as surface-active in these experimental conditions.
Reference
With demineralized water
Assay No. 1 |
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Assay No. 2 |
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Assay No. 3 |
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Temperature(°C) |
20.3 |
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Temperature(°C) |
20.4 |
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Temperature(°C) |
20.1 |
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Time |
Surface tension (mN/m) |
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Time |
Surface tension (mN/m) |
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Time |
Surface tension (mN/m) |
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T0 |
79.0 |
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T0 |
79.0 |
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T0 |
78.9 |
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T0+ |
8 |
min |
79.0 |
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T0+ |
8 |
min |
79.0 |
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T0+ |
5 |
min |
78.9 |
T0+ |
12 |
min |
79.0 |
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T0+ |
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min |
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T0+ |
min |
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Results |
79.0 |
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Results |
79.0 |
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Results |
78.9 |
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Mean surface tension of water |
79.0 |
± |
0.2 |
mN/m |
at |
20.3 |
°C |
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Calibration factor: |
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φb = (σo/σg) = |
0.921 |
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Where |
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σois 72.75 mN/m (surface of water at 20 °C; value given in the literature). |
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σgis 79.0 mN/m (measured surface of test item at 20.2 °C). |
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With test item solution:
Assay No. 1 |
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Assay No. 2 |
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Assay No. 3 |
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Temperature(°C) |
20.3 |
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Temperature(°C) |
20.2 |
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Temperature(°C) |
20.2 |
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Time |
Surface tension (mN/m) |
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Time |
Surface tension (mN/m) |
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Time |
Surface tension (mN/m) |
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T0 |
74.2 |
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T0 |
74.2 |
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T0 |
74.1 |
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T0+ |
5 |
min |
74.3 |
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T0+ |
10 |
min |
74.2 |
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T0+ |
10 |
min |
74.1 |
T0+ |
15 |
min |
74.3 |
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T0+ |
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min |
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T0+ |
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min |
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Mean |
74.2 |
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Calculation:
Assay |
Measurements(mN/m) |
Average corrected value usingφb(mN/m) |
Average corrected value according to Harkins & Jordan table(mN/m) |
State of equilibrium |
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1 |
74.3 |
68.3 |
68.0 |
2 |
74.2 |
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3 |
74.1 |
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Description of key information
The determination of the surface tension of the test substance is based on a GLP key study, performed in compliance with Commission Directive 92/69/EEC, Commission Regulation (EC) No. 440/2008 - EC A5 method (2008) and OECD Guideline No. 115 (1995).
Key value for chemical safety assessment
- Surface tension:
- 68
- in mN/m at 20°C and concentration in mg/L:
- 304.56
Additional information
The mean surface tension of the test item at approximately its hydrosolubility in demineralized water was 68.0 ± 0.2 mN/m (corrected value). The test item was not considered as surface-active in these experimental conditions.
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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