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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Surface tension

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Administrative data

Link to relevant study record(s)

Reference
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: Standard method followed, no GLP lab.
Justification for type of information:
A discussion and report on the read across strategy is given as an attachment in IUCLID Section 13.
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 stndardized 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:
20.8 mN/m
Temp.:
25 °C
Conc.:
100 vol%
Conclusions:
Under the conditions of this study a surface tension of 20.8 mN/m at 25 °C was determined for the test substance, Hydrocarbons, C7-C9, isoalkanes.
Executive summary:

Under the conditions of this study a surface tension of 20.8 mN/m at 25 °C was determined for the test substance, Hydrocarbons, C7-C9, isoalkanes.

Description of key information

No surface tension data is available for 2,2,3-trimethylbutane. However, data is available for structural analogue hydrocarbons, C7-C9, isoalkanes and is being read across to using an analogue approach. A discussion and report on the read across strategy is given as an attachment in IUCLID Section 13.

The surface tension of hydrocarbons, C7-C9, isoalkanes is between 18 and 22 mN/m at 25°C.

Key value for chemical safety assessment

Additional information

Wilhelmy plate method is used to measure the surface tension using a standardized plate with a plate tensiometer. Using this method the surface tension of

hydrocarbons, C7-C9, isoalkanes is between 18 and 22 mN/m at 25°C. This data is used as read across for 2,2,3-trimethylbutane.