Registration Dossier
Registration Dossier
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EC number: 500-300-6 | CAS number: 111411-00-8
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:
- June 2017 - March 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- not specified
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 44.2 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of a nominally 1.0 g/L solution of test item in water has been determined to be 44.2 ± 0.5 mN/m at 20.0 ± 0.5 °C. The test item was considered to be surface-active.
- Executive summary:
Surface Tension. 44.2 ± 0.5 mN/m (mean of duplicate, nominally 1.0 g/L solutions) at 20.0 ± 0.5 °C, using a ring method, designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.
Reference
The overall water solubility of the test item was determined to be greater than 1 g/L, however as it consists of a complex mixture of components with varying water solubility, some components are insoluble in water when directly preparing a solution with a total concentration of 1 g/L. Therefore the samples were prepared at 1.1 g/L, saturated and diluted to 90%, producing a solution with quantities of the water soluble components representative of a 1 g/L solution and a 90% saturated solution of the insoluble components.
On removal from the 20 °C equilibration, the samples were assessed as clear, colorless solutions containing undissolved test item at the base of the flasks. After centrifugation, the samples were clear, colorless solutions free from undissolved test item, which exhibited no Tyndall beam effect.
According to criteria stated in EC Method A.5, substances showing a surface tension lower than 60 mN/m under the conditions of this method should be regarded as being surface-active.
Description of key information
Key value for chemical safety assessment
- Surface tension:
- 44.1
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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