Registration Dossier
Registration Dossier
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EC number: 914-478-1 | CAS number: -
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 3-8 Aug 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (EU A.5; OECD TG 115).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
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)
- Type of method:
- ring method
Test material
- Reference substance name:
- Montan waxes, type WE 40
- IUPAC Name:
- Montan waxes, type WE 40
- Details on test material:
- Test item: Licolub WE 40 P
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 64.7 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Concentration not determined (see below)
Any other information on results incl. tables
The water solubility of the test item was unknown (information by the sponsor: between 1 and 10 mg/L). A solution of 10.52 mg in 1 L water was prepared. The solution was stirred at room temperature for 48 h and stored at room temperature for 72 h in a closed volumetric flask. The test item did not dissolve completely. Subsequently the solution was filtered and diluted to 90%. The measurement of the surface tension with the test item was carried out at 20.0 °C.
Measurement 1 2 3 4 5 6
Time (s) 207 269 331 393 453 513
sigma (mN/m) 64.78 64.76 64.73 64.63 64.56 64.56
Mean value: 64.68 mN/m (corrected by Zuidema and Waters)
Due to the fact that the surface tension is higher than 60 mN/m, the test item has no surface-active properties.
Applicant's summary and conclusion
- Conclusions:
- The test item solution has a surface tension of 64.7 mN/m at 20 °C.
- Executive summary:
The surface tension of a saturated test substance solution was determined according to EU A.5 and OECD TG 115.
The test item solution has a surface tension of 64.7 mN/m at 20 °C.
Due to the fact that the surface tension is higher than 60 mN/m, the test item does not have surface-active properties.
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