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EC number: 403-360-0 | CAS number: 42405-40-3 BONTRON E-84; E-84
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:
- other: The study was conducted in accordance with GLP. A full study report is available which includes a GLP compliance statement.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 998
- Report date:
- 1988
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- 84/449/EEC
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- OECD harmonised ring method
Test material
- Reference substance name:
- Bis(3,5-bis(1,1-dimethylethyl)-2-hydroxybenzoato-O1,O2)zinc
- EC Number:
- 403-360-0
- EC Name:
- Bis(3,5-bis(1,1-dimethylethyl)-2-hydroxybenzoato-O1,O2)zinc
- Cas Number:
- 42405-40-3
- Molecular formula:
- C30H42O6Zn
- IUPAC Name:
- bis(3,5-bis(1,1-dimethylethyl)-2-hydroxybenzoato-O1,O2)zinc
- Details on test material:
- - Physical state: White powder
- Analytical purity: Not stated
- Lot/batch No.: C-7672
- Expiration date of the lot/batch: Not stated
- Stability under test conditions: Considered stable
- Storage condition of test material: Brown screw capped bottle at room temperature
- Other:
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 55.4 mN/m
- Temp.:
- 22 °C
- Conc.:
- 90 other: % saturated solution
Any other information on results incl. tables
Results
a) Calibration
The literature value for the surface tension of water at 22oC = 72.4mN/m
The average measured surface tension of the blank water at 22oC = 72.6mN/m
Therefore,
Øb = 72.4 = 0.9972
72.6
b) Test solution
The time between preparation of the test solution 1 was 15 minutes and for test solution 2, 72 minutes. The mean measured surface tension was 55.6mN/m
Test solution surface tension corrected for calibration factor:
= 55.6 mN/m x 0.9972
= 55.4 mN/m
Applicant's summary and conclusion
- Conclusions:
- The surface tension of the substance in a 90% saturated aqueous solution was 55.4 mN/m at 22°C.
- Executive summary:
The surface tension of a 90% saturated aqueous solution of test sample was measured using the OECD harmonised ring method. Following correction by a calibration factor, the force required to detach the platinum ring from the surface of a 90% saturated aqueous solution was deternmined to be 55.4 mN/m at a temperature of 22oC.
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