Registration Dossier
Registration Dossier
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EC number: 250-610-8 | CAS number: 31394-54-4
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:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Basic data given
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 53914
- Principles of method if other than guideline:
- Wilhelmy plate method is used to measure the surface tension using a standardized plate with a 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 behaviour, the plate can only be used for interfaces under certain limitations.
- GLP compliance:
- no
- Type of method:
- plate method
- Key result
- Surface tension:
- 20 mN/m
- Temp.:
- 25 °C
- Conc.:
- 100 vol%
- Conclusions:
- Under the conditions of this study a surface tension of 20 mN/m at 25 °C was determined for the test substance, isoheptane.
- Executive summary:
Under the conditions of this study a surface tension of 20 mN/m at 25 °C was determined for the test substance, isoheptane.
Reference
Description of key information
The surface tension range of isoheptane is 17 to 21 mN/m at 25°C.
Key value for chemical safety assessment
Additional information
Surface tension is measured using a Wilhelmy plate. A range of 17 to 21 mN/m covers all possible grades within this substance description if measured with the agreed method. A test conducted by DHC (2010) using a Wilhelmy plate according to DIN 53914 demonstrates that the measured value of 20 mN/m at 25°C falls within these borderline values.
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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