Registration Dossier
Registration Dossier
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EC number: 203-630-6 | CAS number: 108-93-0
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Scientifically valid and accepted method for measuring surface tension, quantification of uncertainty in result, tabulated data, surface tension of reference substance reported. However, not a guideline method, no time dependency reported, no surface tension reported at 1g/L or 20°C.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Based on the pending drop principle, which measures the volume of a drop detaching from a circule cross-section capillary. Details on instrumentail reported in Pineiro, A., et al, J. Chem. Thermodyn., 1999, 31, 931-942.
- GLP compliance:
- no
- Type of method:
- other: pending drop volume
- Surface tension:
- 69.21 mN/m
- Temp.:
- 25 °C
- Conc.:
- 0.72 g/L
- Remarks on result:
- other: Averaged by registrant, n=2; concentration reported as mole fraction x=0.00013
- Surface tension:
- 66.87 mN/m
- Temp.:
- 25 °C
- Conc.:
- 1.4 g/L
- Remarks on result:
- other: Averaged by registrant, n=2; concentration reported as mole fraction x=0.00026
- Surface tension:
- 35.45 mN/m
- Temp.:
- 25 °C
- Conc.:
- 34 g/L
- Remarks on result:
- other: concentration reported as mole fraction x=0.0064
- Conclusions:
- Scientifically valid and accepted method for measuring surface tension. The surface tension of the aqueous solution at 1.4g/L was >60mN/m, and is thus not considered surface active (criteria according to Regulation (EC) No. 440/2008, A.5).
Reference
Mole fraction converted by the registrant using density=0.997021g/cm3 for x=0.00013 & x=0.00026, and density=0.99613g/cm3 for 0.0064).
Description of key information
66.87 mN/m, 25 °C, 1.4 g/L, pending drop volume, Bermudez 2011
Key value for chemical safety assessment
Additional information
One literature study reporting the surface tension of an aqueous solution at 1.4 g/L at 25 °C is available. The reported value of 66.87 mN/m is >60 mN/m, and thus does not meet the criteria for a surface active substance (criteria according to Regulation (EC) No. 440/2008, A.5).
The available data is considered relevant, reliable, and adequate for risk assessment and classification purposes. The endpoint is considered complete through the use of existing data, in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.1.1.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
