Registration Dossier
Registration Dossier
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EC number: 620-092-1 | CAS number: 54024-17-8
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 22 June 2020 - 29 July 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- OECD harmonised ring method
Test material
- Reference substance name:
- (3aS,3bS,9aR,9bS,11aS)‐11a‐ethyl‐10‐methylidene‐1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH‐cyclopenta[a]phenanthrene‐1,7‐dione
- Cas Number:
- 54024-17-8
- Molecular formula:
- C20 H26 O2
- IUPAC Name:
- (3aS,3bS,9aR,9bS,11aS)‐11a‐ethyl‐10‐methylidene‐1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH‐cyclopenta[a]phenanthrene‐1,7‐dione
- Test material form:
- solid: particulate/powder
- Details on test material:
- Storage Conditions: In refrigerator (2-8°C)
Constituent 1
Results and discussion
Surface tension
- Key result
- Surface tension:
- 65.29 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Conc.= 90% saturation in water
Any other information on results incl. tables
Table: Surface tension measurements
Measurement
| Time passed after measurement start [seconds] | Surface tension (mN/m) | |
individual σ multiplied by Harkins-Jordan corrected value | mean σ | ||
1 2 3 4 5 | 40 47 53 63 69 | 65.17 65.29 65.28 65.35 65.34 | 65.29 |
Applicant's summary and conclusion
- Conclusions:
- The surface tension of an aqueous substance solution at 90% saturation is determined to be 65.29 mN/m at 20°C.
- Executive summary:
The OECD harmonized ring method was used in a GLP study based on EC A.5 and OECD 115. The surface tension of an aqueous substance solution at 90% saturation was determined to be 65.29 mN/m (at 20°C). According to EC A.5 the substance is not surface active.
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