Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 022
- Report date:
- 2022
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- 6-Hydroxy-2,6-dimethylheptan-1-al
- Cas Number:
- 62439-42-3
- Molecular formula:
- C9H18O2
- IUPAC Name:
- 6-Hydroxy-2,6-dimethylheptan-1-al
- Test material form:
- liquid
Constituent 1
Results and discussion
Surface tension
- Key result
- Surface tension:
- 54.7 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Any other information on results incl. tables
Reading # | Time (min.) | Replicate #1 | Replicate #2 | ||
Temperature (ºC) | Measured Surface Tension, σg [mN/m] | Temperature (ºC) | Measured Surface Tension, σg [mN/m] | ||
1 | 0 | 20.1 | 57.8 | 20.0 | 58.1 |
2 | 5 | 20.3 | 57.6 | 20.2 | 58.3 |
3 | 10 | 19.6 | 57.5 | 19.8 | 58.6 |
4 | 15 | 20.0 | 57.5 | 20.1 | 58.7 |
5 | 20 | 20.2 | 57.4 | 20.3 | 58.5 |
6 | 25 | 20.1 | 57.5 | 20.0 | 58.8 |
Mean | 57.6 |
| 58.5 | ||
SD | 0.1 | 0.3 | |||
RSD (%) | 0.2 | 0.5 | |||
Replicate | Measured Surface Tension, σg [mN/m] Mean | σg x Φb = σ*[1] | Correction | Corrected Surface Tension[2] |
1 | 57.6 | 58.8 | 0.9216 | 54.2 |
2 | 58.5 | 59.7 | 0.9225 | 55.1 |
Mean | 54.7 | |||
SD | 0.6 | |||
RSD (%) | 1.1 | |||
[1] Apparent surface tension after correction with calibration factor.
[2] Surface tension after applying correction factor.
Applicant's summary and conclusion
- Conclusions:
- The corrected surface tension was 54.7 mN/m. The substance is therefore considered to be surface-active.
- Executive summary:
The surface tension was determined in an OECD 115 guideline study using the ring method. The surface tension aparatus was calibrated using water. Six replicates of two solutions, both containing 1 g/L of test substance in deionized water were performed. The corrected surface tension was determined to be 54.7 mN/m. The test substance is therefore considered to be surface active.
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