Registration Dossier
Registration Dossier
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EC number: 946-365-8 | CAS number: -
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP, standard method, company data, reliable with restrictions
- Justification for type of information:
- Hydrocarbons, C9-C10, aromatics, >1% Naphthalene are a combination of Hydrocarbons, C9 Aromatics and Hydrocarbons, C10-C12 Aromatics. Read across data is available for Hydrocarbons, C9 Aromatics and Hydrocarbons, C10-C12 Aromatics and the worst case scenario for each end point has been presented.
- Reason / purpose for cross-reference:
- read-across: supporting information
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Wilhelmy plate method used
- GLP compliance:
- no
- Remarks:
- Not specified
- Type of method:
- plate method
- Key result
- Surface tension:
- 29.1 mN/m
- Temp.:
- 25 °C
- Conc.:
- 100 vol%
- Conclusions:
- The surface tension of Hydrocarbons,C9, aromatics, is 29.1 mN/m.
- Executive summary:
A standard method was followed and the values were confirmed by the company. The data is therefore considered reliable and suitable for use for this endpoint. The surface tension of Hydrocarbons, C9, aromatics is 29.1 mN/m.
- Endpoint:
- surface tension
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable, well-documented study report which meets basic scientific principles, no GLP lab.
- Justification for type of information:
- Hydrocarbons, C9-C10, aromatics, >1% Naphthalene are a combination of Hydrocarbons, C9 Aromatics and Hydrocarbons, C10-C12 Aromatics. Read across data is available for Hydrocarbons, C9 Aromatics and Hydrocarbons, C10-C12 Aromatics and the worst case scenario for each end point has been presented.
- Reason / purpose for cross-reference:
- read-across: supporting information
- Qualifier:
- according to guideline
- Guideline:
- other: Wilhelmy plate
- Principles of method if other than guideline:
- Wilhelmy plate method is used to measure the surface tension using a standardized plate with a ring/plate tensiometer. The plate is moved towards the surface until the meniscus connects with it. The surface tension is calculated from the resulting force. Due to uncertain wetting behavior, the plate can only be used for interfaces under certain limitations.
- GLP compliance:
- no
- Remarks:
- Not specified
- Type of method:
- plate method
- Key result
- Surface tension:
- 30.4 mN/m
- Temp.:
- 25 °C
- Conc.:
- 100 vol%
- Conclusions:
- The measured surface tension at 25°C is 30.4 mN/m according to the Wilhemy plate methodology.
- Executive summary:
The measured surface tension at 25°C is 30.4 mN/m according to the Wilhemy plate methodology.
- Endpoint:
- surface tension
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because based on structure, surface activity is not expected or cannot be predicted
- the study does not need to be conducted because surface activity is not a desired property of the material
Referenceopen allclose all
Description of key information
Hydrocarbons, C9-C10, aromatics, >1% Naphthalene are a combination of Hydrocarbons, C9 Aromatics and Hydrocarbons, C10-C12 Aromatics. Read across data is available for Hydrocarbons, C9 Aromatics and Hydrocarbons, C10-C12 Aromatics and the worst case scenario for each end point has been presented.
The surface tension of Hydrocarbons, C9, aromatics, is 29.1 mN/m. This was based on neat material rather than in solution.
The surface tension of Hydrocarbons, C10, aromatics, >1% naphthalene is 29 to 32 mN/m at 25°C. according to the Wilhelmy plate testing methodology.
This data is used for read across to Hydrocarbons, C9-C10, aromatics, >1% Naphthalene.
Key value for chemical safety assessment
Additional information
The surface tension of Hydrocarbons, C9, aromatics was reported based on the neat material rather than in solution.
The surface tension of Hydrocarbons, C10, aromatics, >1% naphthalene is 29 to 32 mN/m at 25°C according to the Wilhelmy plate testing methodology.
However, surface tension may be waived In accordance with column 2 of REACH Annex VII. The surface tension study does not need to be conducted as, based on the structure of Hydrocarbons, C10, aromatics, >1% naphthalene, surface activity is not expected or predicted and surface tension is not a desired property of the material.
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.
