Registration Dossier
Registration Dossier
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EC number: 907-713-4 | CAS number: -
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:
- From June 29,2017 to July 14,2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D1331 - 11 Standard Test Methods for Surface and Interfacial Tension of Solutions of Surface-Active Agents
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 304
- Version / remarks:
- 1985
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Specific details on test material used for the study:
- Aspect: Colourless to pale yellow liquid
Lot #: VE00322947
Expiration date: Feb 24,2018 - Key result
- Surface tension:
- 60.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 23 mg/L
- Conclusions:
- The result is 60.3 mN/m. Therefore, according to this test, it was considered that the test material is not surface active (surface tension > 60 mN/m).
- Executive summary:
The surface tension of a solution of ISORALDEINE 40 in ultrapure water (90°C of the saturation concentrtaion) was determined according to the OECD Guideline No 115, using the ring method.
The result is: 60.3 mN/m
Therefore, according to the test, it was considered that the test material is not surface active (surface tension >60mN/m).
A study to assess the surface tension is not available for commercial qualities of the registered substance. However, a valid study is available for Isoraldeine 40. This test item is described in the study report as being composed of 41.8% n-alpha isomer, 12% n-beta isomer and 35.3% iso-alpha isomer, whereas the registered substance consists of the first two isomers as major constituents; concentrations ranges of 30-77% and 10-50% respectively. The registered substance also contains other methyl ionone isomers, including the iso-alpha isomer, as impurities (defined as such because they are present at < 10%). The various isomers are expected to have similar physical chemical properties, given the only structural difference between them is the position of a double bond and methyl group. Thus the surface tension value determined for Isoraldeine 40, is considered applicable to the registered substance.
Reference
| Determination | Surface tension reading mN/m |
| 1 | 60.2 |
| 2 | 60.4 |
| 3 | 60.3 |
| 4 | 60.2 |
| 5 | 60.4 |
| 6 | 60.2 |
| 7 | 60.4 |
| Mean reading | 60.3 |
The results in this table show that there is no significant change of the measured surface tension. Thus it can be concluded that equilibrium is reach. Thus the results obtained were averaged to give the surface tension of the solution.
Description of key information
The surface tension was determined according to the OECD Guideline No 115, using the ring method.
The result is: 60.3 mN/m
Therefore, according to the test, it was considered that the test material is not surface active (surface tension >60 mN/m).
Key value for chemical safety assessment
- Surface tension:
- 60.3
- in mN/m at 20°C and concentration in mg/L:
- 23
Additional information
A study to assess the surface tension is not available for commercial qualities of the registered substance. However, a valid study is available for Isoraldeine 40. This test item is described in the study report as being composed of 41.8% n-alpha isomer, 12% n-beta isomer and 35.3% iso-alpha isomer, whereas the registered substance consists of the first two isomers as major constituents; concentrations ranges of 30-77% and 10-50% respectively. The registered substance also contains other methyl ionone isomers, including the iso-alpha isomer, as impurities (defined as such because they are present at < 10%). The various isomers are expected to have similar physical chemical properties given the only structural difference between them is the position of a double bond and a methyl group. Thus the surface tension value determined for Isoraldeine 40, is considered applicable to the registered substance.
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